The processes in the body of a woman before and after ovulation differ significantly in their features and significance, so it is not strange that the temperature of the body in different phases is fixed differently. Every woman knows that basal body temperature (in the rectum) is measured to determine ovulation.
In the first phase of the cycle, it averages 36, 6-36, 8 degrees. Just before ovulation, it drops by a few tenths of a degree, and on the day of ovulation it rises sharply - to 37 and above. Increased basal temperature indicates the onset of ovulation and persists until the end of the second phase, that is until the menstruation begins. On the eve or the day of the next month, it again decreases.
Why is this happening? Since the ovulation in the body, women are beginning to develop progesterone, which creates favorable conditions for the potential onset, preservation and development of pregnancy. Under the influence of such hormonal fluctuations there are many changes. Among other things, an increased level of progesterone affects the body temperature, slightly increasing it. These indicators remain until the most menses, and if conception has taken place, then for the first four months. A decrease in BT at the beginning of pregnancy may indicate a threat of interruption.
The increased basal temperature in the first weeks and months of pregnancy within 37-37, 5 degrees is a good sign: in the woman's body enough progesterone is produced, so that the pregnancy is preserved and the baby develops. But do not rush to panic if your rates during pregnancy are lower than indicated.
The onset of ovulation and probable fertilization is indicated by an increase in basal temperature of at least 0, 4 degrees compared to the first phase. Such a jump is sufficient and does not give rise to worries. If you have a basal temperature below 37, but above the temperature of the first phase of the cycle, at least 0, 4 degrees, then most likely you do not have to worry either. The main thing, so that your health and tests are normal. This can soothe women who, prior to pregnancy, have plotted basal temperatures and have something to compare with. But what about those who are now pregnant, already pregnant, for the first time in their life began to measure BT, because so advised or ordered by a doctor?
To begin with - also to calm down and not to be nervous. Unrest and stress clearly do not benefit you and the future baby, and with the basal temperature is not yet clear.
First, a truly indicative BT is only considered in the period of implantation of the ovum, which occurs on the 6-12 day after its fertilization. Despite the fact that the basal temperature should be kept high during the first 4 months of pregnancy, in most cases doctors do not recommend measuring it longer than the first 4 weeks. Less often, gynecologists believe that it is necessary to keep BT parameters under control until the 12th week of pregnancy. But in any case, at such times they are not as informative as they were at the beginning.
Secondly, the basal temperature itself means almost nothing. The role of a woman's health, the presence or absence of other signs of abortion, the results of tests and the conclusion of ultrasound that must be performed under the present threat play a role. If everything is in order, the fetus develops well and the mother feels fine, then a low basal temperature during pregnancy should not cause panic.
Moreover, the elevated basal temperature is not yet a guarantee of a normal course of pregnancy. Other indicators are extremely important for assessing her condition. Therefore, be sure to consider all factors.
In the end, remember that each organism is individual, and it has the right, among other things, to have a basal temperature different from the accepted norms. Very many women safely carry babies at BT rates well below 37 degrees. Nevertheless, make sure that it does not fall below 36, 5.
In addition, please note also what degree you measure the basal temperature. It is known that electronic thermometers show approximately 0, 2 degrees less than traditional mercury thermometers. Of course, BT must be measured by all rules. If you do not take this into account, then you must study them.
However, it is quite another matter if the threat of termination of pregnancy is confirmed by other indicators, in addition to low basal temperature. In this case, the doctor will prescribe hormonal therapy for you (as a rule, it can be Dufaston or Utrozhestan) for artificial raising and maintaining the level of progesterone in the body with the goal of maintaining a pregnancy. But keep in mind that this does not necessarily mean that the basal temperature rises to a mark at 37 and above degrees. It can be stored on understated marks - do not worry.