Basal temperature during early pregnancy. Graph of basal temperature during pregnancy. How to measure basal temperature. What should be the basal temperature if you are not pregnant Graph of the basal rate during pregnancy

Most women have heard about such a concept as “basal temperature” more than once, but few understand what this medical term means, why it is necessary to control this indicator and how to decipher the BT schedule for a pregnant and non-pregnant woman. We'll help you figure it out.

Basal temperature - what is it?

Basal body temperature is the minimum indicator that is observed after prolonged sleep and rest. Various processes in a woman’s body increase BT indicators, it is thanks to this feature that changes in the hormonal background can be determined during. Deviations in indicators are a signal of certain violations in the functioning of systems and organs. For example, pregnant women are often monitored. BBT charts with a low temperature in phase 2 may indicate a threatened miscarriage. And similar indicators in a non-pregnant woman indicate infertility.

Why determine basal temperature?

Analyzing changes in BT, the following pathologies are determined:

1. The presence or absence of ovulation.
2. The information obtained can be used both for pregnancy planning and for the calendar method of contraception.
3. Cycle disorders. In case of deviation from the norm, the doctor may suspect some diseases of the reproductive system, such as the presence of an inflammatory process or insufficiency of the luteinizing phase, as well as hormonal disorders.
4. With the help of BBT indicators, you can find out about pregnancy at an early stage. The BT schedule for a pregnant woman has its own characteristics, which are described in more detail below.

How to measure BT?

How to measure basal body temperature? To do this, stock up on a separate thermometer, preferably mercury. BBT is measured in the mouth, vaginally and rectally. The latter method is considered the most preferable, since the results of such measurements are the most reliable due to the minimal influence of external factors. BT is not measured in the armpit. It is necessary to choose only one method, without changing it throughout the entire diagnostic period, which is at least 3 months. Measurements should be taken in the morning, after at least 6 hours of sleep, without getting out of bed, preferably at the same time.

Observe changes in the basal temperature of women with menstrual irregularities, pregnant women. BT schedules for planning girls will become indispensable helpers in determining favorable days

It is necessary to start recording BBT indicators on the first day of menstruation (the beginning of the cycle) in order to obtain complete information for the monthly period. Women who are pregnant should schedule BT regularly throughout the first trimester.

It is recommended to record the results immediately after the measurement, as an error can affect the diagnosis and interpretation of the indicators. In addition to indicating the temperature itself, it is necessary to indicate the day of the cycle, the number of days of menstruation. It is extremely important to note additional factors that may affect the measurement results: medication, lack of sleep, illness, stress, physical activity, sexual intercourse on the eve of the measurement, consumption of spicy foods and alcohol. The schedule of BT of a pregnant woman, in addition to the above factors, should reflect the well-being and feelings of a woman.

Keeping BT records

You can record data in a notebook, but it is more convenient to use online applications or computer programs to record and analyze measurements of basal body temperature. This will decipher the BT schedule for a pregnant and non-pregnant woman: determine ovulation, calculate the average temperature of each phase of the cycle, highlight deviations from the norm, and give recommendations. But do not forget that the resulting software decoding is only preliminary generalized data that cannot be a diagnosis and a guide to self-treatment. The recorded results must be shown to the attending gynecologist. Pregnant women should pay special attention to the results obtained. BBT charts with a low temperature should be shown to the attending physician.

Change in BBT throughout the menstrual cycle

In order to understand the principle on which the diagnostic method is based using basal temperature, it is important to understand what processes in a woman's body are associated with changes in temperature indicators.

The monthly menstrual cycle in medicine is usually divided into 4 phases:

1. Menstrual - begins on the first day of menstrual flow. This day is also considered the first day of a woman's monthly cycle. During this period, the body rejects the endometrium and prepares at the hormonal level for the development of a new egg. This phase lasts up to 7 days. BBT during this period should normally correspond to 36.2-36.6 degrees.
2. This is followed by the follicular phase. During this period, the body intensively produces which promotes the development of follicles, and subsequently - the egg. This period of the menstrual cycle lasts up to two weeks. The basal temperature in the follicular phase rises slightly and is normally 36.7-36.9 degrees. In a day or two, there is a pre-ovulatory temperature drop - up to 36.3 degrees.
3. The ovulatory phase lasts about 3 days. This period is characterized by a decrease in the production of follicle-stimulating hormone and an increase in the level of luteinizing hormone. Thanks to the latter, the egg is released from the follicle - this process is called ovulation. This is the most favorable time for conceiving a baby. The basal temperature during the period of ovulation rises and reaches up to 37.7-37.9 degrees.
4. The last phase, luteinizing, is characterized by the intensive production of progesterone to maintain pregnancy in the event of its occurrence. The basal temperature in this phase remains above 37 degrees. In the absence of fertilization of the egg, the temperature indicators drop sharply 1-2 days before the expected menstruation and amount to 36.6-36.8 degrees. After that, a new cycle begins.

The BBT schedule of a pregnant woman (after conception) should normally look like a monotonous straight line with BBT values ​​above 37 ° C.

Norms of BT indicators

With indicators of basal temperature that correspond to the established norms, at the end of the monthly cycle, the curve of the resulting graph will have a clearly defined two-phase separation. So, in the first half of the cycle, the line will pass below 36.8. A few days before ovulation, a pre-ovulatory decrease in temperature will be noted, after which a sharp increase in indicators by at least 0.4 degrees will be noted. The jump is separated by a red line - this is the day of ovulation. After that, the elevated temperature lasts up to 14 days, then a premenstrual drop in the indicator is recorded.

BT during pregnancy: normal

If within 16 days after ovulation the thermometer shows more than 37 degrees, this may indicate pregnancy. If conception has occurred, the egg is attached to the wall of the uterus. Progesterone and the "pregnancy hormone" - hCG - begin to be produced. When women are pregnant, BBT charts show a temperature of 37-37.6 o C. In 25% of cases, in the early stages of embryo development, an increase in indicators to 38 o is observed. In addition, with normal production of progesterone, there will be no premenstrual decline in basal temperature.

When conception is confirmed, doctors recommend continuing the schedule throughout the first trimester. It is especially important to keep a schedule of BT for a pregnant woman who has had miscarriages or a fading of the embryo at an early stage in history. At a later date, such a procedure turns out to be uninformative due to changes in the hormonal background.

On sites for expectant mothers, forums, you can view the so-called "pregnant" BT charts. A photo showing normal indicators during the menstrual cycle, accompanied by conception, is presented below.

Implantation retraction - what is it?

Often there are "pregnant" BT schedules with implantation retraction - a sharp decrease in temperature approximately 5-7 days after ovulation. The next day, the indicators return to a level above 37 degrees. Such a temperature change is observed during the period when the fertilized egg is attached to the wall of the uterus. Fixing on the chart is considered a sign of pregnancy. In addition to a sharp jump in temperature, sometimes there may be slight spotting discharge from the genitals and pulling sensations in the lower abdomen. But if, simultaneously with such symptoms, a woman observes “pregnant” charts with low BBT, this is a serious reason for urgently seeking medical help - there is a risk of miscarriage.

BT during pregnancy: deviations

Deviations from the established norms of basal temperature indicators often indicate various violations, sometimes dangerous conditions of a pregnant woman and baby. If you followed all the measurement rules, and the thermometer records readings below 37 or above 38 degrees, an urgent consultation with a specialist is necessary. You need to pay attention to the state of health in the following situations:

1. In previous cycles, the basal temperature in the post-ovulation period was 37-37.3 o C, and during pregnancy it jumped sharply to 38. Such a change in indicators may indicate the presence of various kinds of inflammatory processes in the body. It is required to undergo a series of tests and diagnostic procedures to make a correct diagnosis. But if even before pregnancy the temperature in the second half of the cycle was close to 38, there is no reason for concern, in this case, high BT rates are individual characteristics of the body.
2. "Pregnant" BT schedules with low temperature in phase 2 require urgent medical attention. Indicators below 37 degrees indicate a lack of progesterone - this is extremely dangerous during pregnancy. A decrease in hormone levels can threaten spontaneous abortion (miscarriage). With the timely diagnosis of a pathological condition, it is possible to normalize the level of progesterone by taking synthetic drugs. In this case, the probability of maintaining and further normal development of pregnancy is high. Another reason for a decrease in temperature can be a frozen pregnancy. Unfortunately, in this case, it is not possible to save the fetus. Such a diagnosis must be confirmed by ultrasound diagnostics. If pregnancy is confirmed, the doctor will prescribe curettage of the uterine cavity for medical reasons.

Norm and deviations of the basal temperature curve

We discussed above what the normal BT indicators should be in a certain period of the menstrual cycle. Now let's figure out what types of graphs are there that indicate deviations in health status:

1. If in the second half of the cycle the basal temperature rises only slightly (up to 0.3 degrees) and such curves are recorded for several cycles in a row, the doctor may suspect a hormonal imbalance: a lack of progesterone is possible. Such deviations lead to the absence of ovulation and, consequently, to infertility.
2. In most cases, women face problems in carrying a child, whose basal temperature rises only a few days before menstruation, and the duration of the second half of the cycle is 10 days or less. In addition, there is no decrease in temperature before the onset of menstruation. In such a situation, doctors talk about the insufficiency of the second phase of the cycle, the threat of miscarriage. Timely detection of pathology is corrected by medication.
3. The curve of the graph, which does not have a pronounced decrease and increase in temperature, and according to the results of the indicators, it is not possible to divide the cycle into separate phases, indicates the absence of ovulation. This cycle is called anovulatory. During the year, a woman can normally have 1 cycle without ovulation. But if such a schedule is fixed for three months or more, you need to contact a gynecologist for an examination. With such indicators of basal temperature, pregnancy is impossible. An example of such a graph is shown below.
4. The zigzag, chaotic curve of the basal temperature graph indicates a lack of estrogen in the woman's body. This leads to a lack of development of follicles, and subsequently the egg. And as a result - anovulation and infertility. Be sure to seek the advice of a specialist when fixing these types of schedules for more than three cycles in a row.

Measurement of basal temperature is an effective and affordable home method for diagnosing various pathologies in a woman's body. The schedule of BT for a pregnant woman is extremely important - timely identification of the problem can save the life of the unborn baby and mother. But do not self-medicate - in case of temperature deviations from the norm, consult a gynecologist for advice.

When pregnancy occurs, women need to constantly measure their basal body temperature and build a graph. If a pregnant woman for some reason does not know how to do this, then you can visit the relevant pages on the Internet, where there is a graph of basal temperature during pregnancy with a transcript. A gynecologist usually explains to a pregnant woman how to measure BBT correctly and how to build a schedule later.

Ovulation. basal temperature. Schedule. Pregnancy.

What you need to know about the temperature in the absence of pregnancy? It is desirable to build a graph of basal temperature without pregnancy from clearly distinguishable two phases - follicular and luteal. In the 1st phase of the cycle, subject to the correct measurement of body temperature, the thermometer usually shows 36, 4 - 36 and seven, and these parameters are normal.

By the middle of the cycle, the temperature usually decreases, but a day later it suddenly rises - by 4 or 6 tenths of a degree. If at the same time it is as much as 37 or even more degrees, this is normal. Then, in place of the bursting follicle, a corpus luteum is formed. Insufficiency of the corpus luteum is the cause of the development of pathologies of pregnancy and the appearance of miscarriage.

Elevated temperature can persist up to 12 - 26 days, but before a new menstrual cycle, it falls. This dynamic is typical for healthy women who do not have hormonal problems.

Hooray! My pregnant basal temperature chart

It can show how pregnant women make charts of basal temperature examples forum. They will be significantly different from the "normal". So, the schedule of basal temperature during pregnancy before the delay is practically no different from the "non-pregnant" schedule.

Table of basal temperature during pregnancy

Women should be aware that during pregnancy, the preservation of the corpus luteum in the ovary is found for quite a long time. The corpus luteum is necessary for the production of progesterone, without which the normal course of pregnancy is impossible. The graph of basal temperature during pregnancy by day shows how the activity of the uterus occurs. If such a hormone is not enough, then a woman may have a miscarriage. Progesterone contributes to normal breast function.

Graphs of basal temperature during pregnancy examples indicate that an elevated basal temperature can persist throughout the entire period of gestation of the embryo. Graphs of basal temperature during pregnancy photos show the dynamics of changes in the processes occurring in the female body. Around the 16th week, progesterone is synthesized in the placenta, and the corpus luteum is slowly reduced

A woman should carefully and constantly measure her basal temperature during pregnancy. It can be suspected by the fact that BBT does not decrease before the start of the proposed new cycle. Shows what the basal temperature chart looks like during pregnancy, the forum is the most common options for changing one of the main indicators of the female body. If ovulation occurs, then the basal temperature schedule during pregnancy under normal conditions is kept elevated. If the temperature is kept at 37 and above, then everything is normal in the woman's body. In some cases, there are unusual pregnant graphs of basal temperature.

It is necessary to take a pregnancy test if the BT parameters indicate a suspected pregnancy. This can be done at home as well. Sometimes it happens that with a positive test, the basal temperature fluctuates. In such a situation, you must urgently consult a doctor.

When diagnosed with pregnancy at a low basal temperature, the graphs do not correspond to the normal indicator. And this is the reason for contacting an obstetrician-gynecologist.

A woman should remember that a week after ovulation, there may be a slight decrease in temperature. This happens on the condition that the fertilized egg is introduced into the uterine mucosa.

When should you visit a gynecologist? A woman should be aware that a pregnant graph with a low basal temperature is a sign of pathology. To make a diagnosis, it is very important for a woman to measure her basal temperature every day and for several months. It is recommended that you see a doctor if you have these symptoms.

1. Decrease in basal temperature. This is especially important when a decrease in Bt was observed throughout the entire monthly cycle.
2. An increase in temperature throughout the entire monthly cycle (this may indicate the development of hyperprolactinemia).
3. A small difference between the phases of the monthly cycle (that is, less than 4 tenths of a degree).
4. A slow rise in temperature in the middle of the cycle (this may indicate insufficiency of the corpus luteum).
5. Long duration of the 1st phase (if it is more than 17 days).
6. Shortening of the second phase (normally it should be at least twelve days).
7. Delay without pregnancy.
8. Long (more than 35 days) and short (less than 21 days) menstrual cycle.

Charting a basal temperature is necessary for all women planning a pregnancy. The measurement procedure is simple and easy, so it should be carried out when the period of gestation of the embryo begins. Provided that the woman carefully follows all the recommendations of the doctor, the data obtained during the measurement will be reliable.

Sometimes, based on the results of measurements, the doctor may recommend that the patient undergo an additional examination, take tests, and so on. In no case should one avoid analyzes, because only they will give a real picture of the processes occurring in the body. For couples planning a pregnancy, all such tests will be very necessary.

Please note that when changing BT, you do not need to take any self-treatment measures. It is very harmful and can lead to disastrous consequences. Self-administration of hormonal medications can cause infertility in women, which can be very difficult to get rid of.

And one more important note: it is useless to measure basal temperature during the day or in the evening. For this, only the morning time is needed.

The human body is an amazing and delicate system. On the one hand, typical processes, cycles and situations occur in each of us, on the other hand, in each specific organism they all have their own characteristics. Perhaps the most striking example of this can be considered the female body and its reproductive system.

Every woman over the age of 15 is certainly familiar with the menstrual cycle. In any case, with his external resistance - menstruation. However, the essence of the cycle and related processes eludes many. Although knowledge of these processes helps not only to plan your time correctly, taking into account the menstrual cycle, but also to diagnose pregnancy in the early stages. But this is the dream of so many women planning a pregnancy.

A schedule for measuring basal temperature during pregnancy before delay can help with this. However, in order for this to become possible, the schedule must be maintained for at least 3-4 months. Only this will allow you to trace the features of changes in basal temperature in a particular woman.

We all know from childhood how body temperature is measured - a thermometer under the arm, wait five minutes and see the result. However, few people know that this is how the skin temperature is measured, and no more. The temperature of the internal organs and cavities will be slightly different. That is why many doctors now recommend measuring the temperature in the mouth or in the auricle.

And there is also such a thing - basal temperature, or rectal. To find out, the measurement must be carried out in the rectum. Moreover, this must be done strictly following certain rules, since a huge number of factors affect the basal temperature, starting with physical activity.

How should basal temperature be measured to determine pregnancy in the early stages?

• it is important to measure the temperature at the same time, with a difference of no more than 30 minutes;
• you need to take measurements in the morning without getting out of bed, you can’t even take a sitting position;
• keep the thermometer for at least 5-7 minutes;
• it is necessary to take readings immediately after you pull out the thermometer;
• the received data are entered into the chart;
• be sure to mark in the chart the possible reasons for the deviation from the usual schedule, such as a cold, inflammation, and so on.

Why measure basal temperature?

The fact is that the basal temperature changes during the cycle in a certain pattern. At the beginning of the cycle, it decreases, by the time of ovulation, on the contrary, it becomes higher. That is, if you keep a graph of changes in basal temperature, you can calculate the most favorable days for conception. Usually, it is for this purpose that women take up this occupation. What happens to the basal temperature during pregnancy before the delay? And can BT be considered a sign of pregnancy?

Change in basal temperature during pregnancy

As mentioned above, in the first part of the cycle, starting approximately from 3 or 4 days after the end of menstruation, the basal temperature drops to 36.5-36.8 degrees. This temperature is necessary for the maturation of the egg. The day before ovulation, the temperature drops sharply, and then rises no less sharply to about 37 degrees, sometimes a little higher.

About a week before the onset of menstruation, the basal temperature begins to decrease, unless, of course, pregnancy occurs. What if it comes?

The thing is that the hormone progesterone, which begins to be produced immediately after ovulation, is responsible for the increase in basal temperature during ovulation.

If conception does not occur, then the level of progesterone decreases, therefore, the basal body temperature also decreases. If conception occurs, then the level of progesterone is maintained, and the temperature remains high. Basal temperature during pregnancy before delay is about 37 degrees.

If a woman keeps a chart of basal temperature for several months, then in the event of pregnancy, she will notice that about a week before the onset of menstruation, the basal temperature, instead of the usual decrease, continues to remain at 37 degrees. In this case, you can most likely assume that you are pregnant.

There is an opinion that the basal temperature may decrease before a miscarriage or in the case of a missed pregnancy. Do not take this information seriously. However, if you are still worried about this, you can consult a doctor for your own peace of mind.

Strictly speaking, it makes no sense to keep a graph of changes in basal temperature for the purpose of early diagnosis of pregnancy, since this is too unreliable. Basal temperature can bring much more benefit in determining a favorable day for conception.

The graph of basal temperature during pregnancy reflects the direct dependence of rectal indicators on the influence of hormones at different periods of the menstrual cycle.

MC has 2 phases.

1. Follicular - the first half proceeds under the influence of estrogen. During the period of maturation of the egg, temperature fluctuations are allowed within the range of 36.4–36.8 ° C.
2. Luteal - ovulation occurs. That is, the bursting follicle is replaced by the corpus luteum, which synthesizes progesterone. An increase in hormone production provokes an increase in temperature by 0.4–0.8 ° C.

In a normal state (before pregnancy), the basal temperature drops slightly before menstruation. A jump in indicators to a minimum downward is noted before ovulation.

An example of a normal two-phase temperature graph:

normal example

The middle (or overlapping) line serves to make the curve easier to read. It is carried out at the points of six temperature values ​​​​before ovulation in the follicular phase.

The first 5 days of menstruation are not taken into account, as well as situations in which external factors influenced. Consider a photo that shows what a finished chart looks like with real temperature readings during pregnancy:

The woman celebrated every day

The curve shows that BBT does not decrease before menstruation. If, against the background of increased rectal temperature, there is a delay in menstruation, then the pregnancy has taken place.

To confirm the findings, it is necessary to conduct a test and come for a consultation with a gynecologist. Be sure to show your temperature chart to your doctor.

Signs of pregnancy and its absence on the BBT chart

At conception, the basal temperature rises. The indicators do not decrease before the onset of menstruation and remain throughout the entire gestation period.

You can determine pregnancy according to the schedule by the temperature jump on the 7-10th day after ovulation - this is the moment the fertilized egg is introduced into the inner lining of the uterus.

Sometimes early or late implantation is observed. Even the most informative ultrasound examination cannot reliably track this process.

A sharp decrease in temperature on the graph in the second phase is called implantation depression. This is one of the first and most frequent signs that is noted on the basal chart with a confirmed pregnancy.

This phenomenon is due to two reasons.

1. The increased production of progesterone increases the temperature, which gradually decreases closer to the middle of the luteal phase. At conception, the corpus luteum begins to actively synthesize the hormone, which leads to fluctuations in values.
2. If pregnancy occurs, then a large amount of estrogen is released, which causes a sharp decrease in temperature in the scheme.

The connection of hormones with different functions leads to a shift, which manifests itself in the form of an implantation depression on a personal map.

This phenomenon cannot be reflected by any other study other than the basal temperature curve. Example:

Implant retraction

Please note that with a completed pregnancy, starting from the 26th day of the menstrual cycle, the schedule becomes three-phase. This is due to the increased synthesis of progesterone after implantation of the egg.

Confirmation of the introduction of the embryo may be a slight discharge that disappears in 1-2 days. This is implantation bleeding, which is caused by damage to the endometrium.

Nausea, breast swelling, intestinal disorders and other similar signs are not reliable. There are cases when, even with severe manifestations of toxicosis, pregnancy did not occur.

And, on the contrary, without a single sign, the woman stated the fact of a successful conception. Therefore, the most reliable conclusions are considered to be a persistent increase in basal temperature, implantation retraction. Another sign is a delay in menstruation, subject to sexual contact during the period of ovulation.

A decrease in temperature before menstruation is a sign of the absence of pregnancy. Fluctuations in rectal numbers can be interpreted in different ways. Fever is not always a sign of pregnancy. This is possible due to inflammation of the appendages.

Each case must be compared with all the changes in the body and confirm your observations in the gynecologist's office.

It is important to record data regularly

Normal basal temperature chart during pregnancy

Keeping a BT calendar is relevant only at the very beginning, that is, in the early stages of gestation. Favorable conditions are necessary for the normal development of the embryo in the first trimester.

For this, the body of a pregnant woman begins to intensively produce progesterone. This hormone raises the temperature in the reproductive system to create a "warm" environment for the embryo.

Normally, after the onset of egg implantation, the basal temperature figures on the diagram should be in the range of 37.0–37.4 ° C.

However, in some cases, a drop to 36.9 ° or an increase to 38 ° is allowed. Such values ​​may be considered acceptable.

Unusual BT schedules during pregnancy

Normally, the temperature difference between the first and second phases should fluctuate within the allowable 0.4 ° C and above.

How to determine the average BBT? To do this, it is necessary to add up all the temperature numbers obtained during the measurement, first in period I, dividing the sum by the number of days. Then similar calculations are carried out with indicators of phase II.

Let's look at a few examples that are most common.

Anovulatory cycle

This graph shows a uniform curve without division into periods. It can be seen that BT in the luteal phase remains low, not exceeding 37°C.

In the absence of ovulation, the formation of the corpus luteum is impossible, which activates the synthesis of progesterone. There is no upswing.

If the anovulatory cycle is repeated periodically, no more than 1-2 times a year, then this is the norm. However, if the situation occurs in a row for 60 days or several months, then it will be difficult to get pregnant on your own.

Next example:

Need to consult a doctor

With estrogen-progesterone deficiency, the rectal temperature chart remains low after ovulation, up to the 23rd day of the cycle. The difference between the average values ​​is a maximum of 0.2–0.3°.

A similar curve built over several MCs indicates a lack of production of hormones important for the development of pregnancy. The consequence of the pathology may be endocrine infertility or the threat of miscarriage in the early stages.

Next example:

Possibly a disease

Endometritis is an inflammation of the inner lining of the body of the uterus. With this disease, the temperature curve reflects a decrease in indicators before menstruation and a sharp rise in values, uncharacteristic for the first phase.

Next example:

The chart is useless here.

This graph shows high readings up to 37° in the first phase. Then there is a sharp decline, which is often mistaken for an ovulatory rise. With inflammation of the appendages, it is difficult to correctly determine the moment of release of the egg.

By examples, it can be understood that it is easy to identify pathologies using a personal basal map. Of course, twins or one embryo can only be shown by ultrasound, but the conception on the BT map is determined accurately.

Graph of basal temperature for ectopic and missed pregnancy

With anembryony (death of the fetus), elevated rectal values ​​decrease to 36.4–36.9°C. The decrease in temperature on the graph is due to the regression of the corpus luteum and the stoppage of progesterone production.

Low values ​​in the second phase are possible due to a lack of hormones. Sometimes, with a frozen pregnancy, there is a sharp rise in temperature against the background of decomposition of the embryo and inflammation of the endometrium.

Ectopic conception by rectal indicators can not be detected. With ectopic fetal development, progesterone is produced as during normal gestation of the first trimester.

However, against the background of the growth of the embryo, there are symptoms that you should immediately pay attention to. This is an acute pain syndrome in the abdomen, discharge, vomiting, etc.

On the days of ovulation

At the same time, an inflammatory process can develop, which is usually manifested by a sharp rise in temperature to 38 ° and above.

Do not self-diagnose. Any suspicious changes in the rectal temperature chart should be reported to a doctor.

After the completed conception, the female body immediately begins to undergo some changes that occur according to a certain plan. Thanks to clear physiological rules, it is possible to predict possible fertilization even before the delay of menstruation, and also to check whether your pregnancy is proceeding normally. This can be done using the usual measurement of basal temperature (BT). Its level is significantly affected by a sharp surge and a decrease in the concentration of sex hormones. Let's look at the principles of measurement and the rules for deciphering the obtained basal temperature standards from the moment of planning to the end of gestation.

Basal body temperature is called, measured in conditions of complete rest immediately after waking up. Its level changes cyclically during the menstrual cycle under the influence of two main hormones - estradiol and progesterone.

In gynecology, the BBT schedule is considered an indicator of women's health. The study of several graphs can determine whether a woman has a normal hormonal background, whether there are inflammatory pathologies, whether ovulation is normal and whether it exists at all.

At the planning stage, BT allows you to "catch" ovulation without special expensive tests or diagnostic ultrasound. But the effectiveness of the technique is observed with regular measurement of BT with adherence to the prescribed rules for the procedure.

The principle of determining BT is based on temperature fluctuations, based on the phases of the female cycle. As you know, the cycle consists of two phases, and ovulation serves as the equator between them. The essence of observations comes down to the daily entry of temperature indicators into a simple graph. In the first half, the temperature is low, and in the second, under the influence of progesterone, higher.

Ovulation is characterized by a sharp drop in temperature - the temperature drops, and on the second day it rises rapidly. And with the approach of menstruation, it begins to decrease again. If fertilization has occurred, the graph will display a consistently elevated basal temperature during pregnancy, before the delay it will exceed 37⁰С. In the absence of fertilization, BBT before menstruation will drop to 36.7⁰С or even lower.

In obstetric practice, BT scheduling is used if:

• Absence of pregnancy for more than 12 months without obvious reasons.
• It is necessary to establish the correspondence of hormone production with respect to the phases of the menstrual cycle.
• Clarification of the present pathology of the hormonal background of a woman is required.
• It is necessary to calculate favorable days for conception, when it is not possible to constantly live a sexual life.
• There is a suspicion of a latent course of endometritis.
• It is necessary to establish the fact of fertilization before the delay due to the possible threat of interruption against the background of alarming symptoms (brown discharge, pain in the lower abdomen).

Important! If there is no temperature jump in the ovulatory period, and the difference between the average BT of the two phases is less than 0.4⁰С, then the woman has hormonal pathologies and ovulation does not occur.

How to measure basal temperature to determine pregnancy

Accurate BBT is obtained by rectal insertion of a thermometer into the anal lumen. Manipulation should be carried out daily at the same time. Which thermometer to use is your personal decision, the main thing is to do it according to the rules.

How to measure basal temperature during pregnancy:

• BBT should be monitored in the morning. At the same time, it is forbidden to sit down abruptly, leave the bed. The sleep preceding the measurement should be more than 6 hours. Frequent awakening at night will make the morning temperature uninformative.
• In the daytime, BT changes a lot. This is influenced by activity, feelings, fatigue. Therefore, BBT is measured in the morning, while the body is still “sleeping”. And it is pointless to check the basal temperature during pregnancy in the evening, since the result will be unreliable.
• The duration of the procedure is 5-6 minutes. In the case of using an electronic thermometer, you need to keep it for another 3-4 minutes after the beep.
• It is better to start recording the temperature from the first cyclical day, otherwise it will be impossible to assess the ratio of indicators between the phases. If the measurement is carried out in order to diagnose the hormonal background, it will take at least three months to draw competent conclusions.
• All received figures should be noted on a special chart.

Important! The basal temperature chart during pregnancy will be uninformative if it was compiled during an acute illness, or against the background of stress, alcohol abuse, taking hormonal pills, frequent flights and trips. Also, BBT indicators will be false if they are obtained less than 6 hours after intercourse.

Norms of basal temperature during pregnancy

The whole cycle is based on a certain BT dynamics. To understand whether pregnancy has occurred, you need to navigate in the usual indicators before conception and after it:

• The follicular phase lasts approximately 11-14 days, but this is only a guide, because every woman has a different cycle. To navigate the phases, count two weeks from the last day of the cycle and get the approximate date of ovulation. Under the condition of a normal state of health, BT in the first half ranges from 36.1 to 36.8⁰ C.
• The moment of ovulation is the climax: the egg is released from the proovulated follicle, which is accompanied by a sharp production of hormones. The graph shows a jump in BT to 37.0 -37.7⁰С.
• Then comes the luteal phase, which lasts until the onset of menstruation. At this stage, the temperature remains high, and only a few days before menstruation begins to decrease by 0.3-0.5⁰С. If such a decrease does not occur, there is a high probability that fertilization has occurred.

Advice! The level of BBT during gestation is very individual and in some women pregnancy proceeds well even at 36.9⁰С. For this reason, there are no clear indicators of what the basal temperature should be during pregnancy. Therefore, the only diagnostic criterion is the absence of a decrease in BBT after ovulation.

In order for a fertilized egg to be able to fully implant into the endometrium and develop further, the body creates special conditions for this. To do this, he begins to produce progesterone in large quantities. This hormone provokes a persistently high BBT, which remains elevated until a certain period.

Depending on the characteristics of the hormonal system in different women, the basal temperature during early pregnancy is 37.0-37.4⁰С. Such values ​​indicate that the pregnancy is developing well and there is no threat of miscarriage. In individual cases, BT can even rise to 38⁰С, which is also considered normal.

Pathological basal temperature after conception: causes of deviations

The basal temperature during gestation does not always correspond to the prescribed norms. There are exceptions, because the female body is different for everyone. In some cases, there is no reason to worry, and minor deviations are considered a variant of the norm. Unfortunately, the predominant number of cases of pathological fluctuations in BT is caused by various complications during pregnancy.

Basal temperature with a threat of miscarriage

Instead of an ovulating follicle, a corpus luteum appears. It produces a huge amount of progesterone, which ensures the safety of the fetus. If a woman had hormonal problems even before conception, the resulting corpus luteum may not function correctly. As a result, progesterone deficiency develops, which causes the risk of termination of pregnancy.

On the BBT chart, such a pathology is very difficult to miss: the temperature is kept at a too low level below the 37⁰С line. Therefore, if the basal temperature is 36.9 during pregnancy, it is necessary to determine and eliminate the cause of this condition.

A very high level of BT can also indicate a possible termination of pregnancy. Thus, a temperature of 38⁰С is often caused by an inflammatory process in the uterine cavity, which can provoke egg rejection. A one-time rise is rarely a threat to the fetus, but if such an indicator holds positions for more than three days, you need to see a gynecologist.

Basal temperature during a frozen pregnancy

When the embryo stops developing, the corpus luteum begins to regress and progesterone production stops. As a result, BT gradually drops to the level of 36.4-36.9⁰С. By the way, low temperature does not necessarily indicate the fading of the fetus. There is a high probability of measurement errors or the aforementioned condition of progesterone deficiency. Therefore, do not rush to self-diagnose yourself before visiting the doctor.

Advice! It happens that anembryony (embryo freezing) has occurred, and the temperature is consistently high, so it is not necessary to focus only on BT indicators. With uncharacteristic pains, pathological discharge, poor health, you should immediately visit a gynecologist.

Basal temperature during ectopic pregnancy

A fetal egg implanted in the fallopian tube does not block the work of the corpus luteum. For this reason, progesterone is fully produced and the BT schedule looks quite normal. That is why it is simply impossible to judge an ectopic pregnancy only by the numbers of basal temperature.

However, as the embryo grows, an inflammatory process develops in the fallopian tube, which provokes an increase in BT. On the graph, the temperature can rise even above 38⁰С. But at this stage, other symptoms also indicate the presence of ectopic implantation - acute abdominal pain, fever, vomiting, loss of consciousness, and sometimes internal bleeding.

How to correctly compose and decipher a BT schedule: a detailed guide

It is easy to draw a chart for maintaining a basal temperature on a piece of paper, or you can print a ready-made template.

The graph shows several values ​​at once:

• Menstrual cycle by day (from 1 to 35 days, depending on the length of your cycle).
• Daily temperature readings.
• Special notes (poisoning, stress, insomnia, SARS, etc.)

For the BT record, the table is marked up as follows:

• A checkered sheet is divided into two axes: the X axis is the day of the cycle, the Y axis is the BT indicator.
• An indicator is indicated daily, all points are connected by a line.
• A solid line is drawn through the six upper indicators in the first phase, with the exception of the days of menstruation, then the line continues until the end of the second cycle.
• On the day of the expected ovulation, a vertical line is drawn.

To understand what a temperature chart might look like, see how the basal temperature fluctuates during pregnancy in the photo:

The figure clearly shows ovulation, an increase in BBT in the second phase. On the 21st day of the cycle, a jump in temperature is noticeable as a result of the implantation of a fertilized egg, and from the 28th-29th day the third phase begins - the gestational one. Pregnancy can also occur at a low basal temperature. Even if the BBT does not rise above 36.8⁰С, and the delay has been present for several days, you need to go to the doctor.

This photo shows a graph with full-fledged cycle phases inherent in a healthy woman outside of pregnancy. In the first phase, BT confidently stays below 37⁰С, after ovulation it begins to grow and remains at this level for 11-14 days, and three days before menstruation, it begins to return to its original values.

The next type of BBT schedule is anovulatory. The follicle does not grow, does not ovulate, and the egg, accordingly, has nowhere to come from. Throughout the cycle, it can be seen that BT randomly “jumps” without a regular change in values ​​​​and an ovulatory jump. In appearance, the graph resembles a monotonous straight line, the points of which range from 36.4⁰С to 36.9⁰С. Such a schedule is quite possible once or twice a year and is considered the norm. But if such a picture appears regularly, the woman definitely has gynecological or endocrine problems.

It is possible to determine the deficiency of estrogen according to the schedule. For this reason, in the first phase, there is a pathological increase in BBT up to 37.4⁰С. In the follicular phase, a large amount of estrogens should be produced, which suppress BBT to a level below 36.5⁰С. The lack of estrogen also causes a high temperature in the second cycle (above 37.5 ° C), which is in no way associated with ovulation and conception.

It is not entirely correct to judge the state of women's health or the onset of pregnancy according to the BT schedule, because there is a risk of false indicators if the rules for measuring temperature are not followed. And the influence of all external factors is also impossible to completely exclude. Therefore, plotting serves as an additional diagnostic tool.

Now you know how to measure basal temperature to determine pregnancy, so you definitely won’t have any difficulties. Accurately measure BBT, keep a schedule and then you will definitely guess about your pregnancy even before the delay.

Video "Top 5 Rules for Accurate Basal Temperature Measurement"