Progesterone during pregnancy
Every time after ovulation (that is, after a mature egg leaves the follicle in anticipation of a meeting with the sperm), a yellow body forms in the ovary. If pregnancy does not occur, after 12-14 days it dies, which is marked by the onset of menstruation. The yellow body produces the hormone progesterone, so during the ovulation period its amount increases 10 times, reaching a maximum in the luteal phase. In the case when conception occurs, progesterone production continues and the level of this hormone increases. Why is this happening?
Without enough progesterone, fertilization, first, can not take place, and secondly, the egg can not be implanted. Therefore, conception either does not happen at all, or ends with spontaneous miscarriage. To prevent this from happening, the body (or rather, as we have already said, the yellow body) begins to actively develop a female hormone.
Progesterone "rebuilds" the female body in a new way, creating the most favorable conditions for conceiving and bearing a child. Thus, the musculature of the uterus stops shrinking, becomes more elastic, and the uterus prepares for intensive growth. The mammary glands change, preparing for the production of milk. Secretion of sebum is activated. Also, under the influence of progesterone, the work of the nervous system of a pregnant woman can be corrected, which adjusts it to calm bearing and prepares for maternity.
Progesterone level during pregnancy
So, if the egg is fertilized and the yellow body continues to function, The level of progesterone in the body of a woman will inevitably increase. This process continues throughout the pregnancy. But in the first 3, 5 months the hormone is produced by the yellow body, and then (from the 16th week) - by the placenta, which by that time is fully formed and will shift all the responsibilities to itself.
In each subsequent trimester, the amount of progesterone will exceed the previous one. His level during pregnancy gives reason to doctors to judge the development of the fetus, the condition of the placenta and in general - the course of pregnancy. That's why the hormone will be monitored: there are certain limits in which the level of progesterone normally should be in pregnancy:
I trimester 8. 9 - 468. 4 nmol / l
II trimester 71, 5 - 303, 1 nmol / l
III trimester 88, 7 - 771, 5 nmol / l
Deviations from these norms may indicate some violations or complications.
Deviations from the norms of progesterone in pregnancy
If progesterone is produced in sufficient quantity, then pregnancy passes without complications: favorable conditions, all the ongoing processes in the mother's body are adjusted to bear, the fetus develops in a timely manner, which means there is no reason for worry. But with progesterone insufficiency, the general atmosphere is disrupted, and certain risks appear. An increased level of progesterone during pregnancy also poses a risk to the fetus. Therefore, adjustments require both these states.
Some medicines can change the level of progesterone in one direction or another. So, evaluating the results of the analysis, the doctor must certainly know that you are taking something.
The increased amount of progesterone during pregnancy can talk about a yellow body cyst or deviations in the development of the placenta. A lowered level is a sign of insufficient function of the yellow body or placenta, a delay in intrauterine development, a true over-stretching of pregnancy. Both these conditions are dangerous (lag in fetal development, hypoxia) and can lead to miscarriage. Therefore, you should always listen to the doctor's recommendations.
However, do not rush to make any conclusions yourself - trust a good specialist. And let your progesterone be normal!