Gestation:How hormones and how is the system
Tags: Gestation, Gestation:How hormones and how is the system, ovulation
It is not easy to simplify the development of a hormonal menstrual cycle because it is a very complex system, we’ll still be as clear as possible: in the first days of menstruation, FSH has a performance curve, that increases to stimulate growth of follicles who were recruited for this cycle and decreases when a follicle is selected for ovulation.
These days even the LH starts to rise slowly.
Approximately 7-8 days before the time of maximum concentration of LH, the follicle selected to begin producing estrogen, particularly estradiol, first slowly and then more quickly.
Meanwhile, the ovaries continue to produce low and constant, estrogen and progesterone.
Just before the peak of LH, the ovaries begin to increase significantly the levels of progesterone while the dominant follicle to decrease estradiol.
During ovulation may happen to have spotting, ie minor bleeding. The blood, however, is not that of the follicle because there would never be leaking from the vagina, to break up the follicle may come into contact with the perineum irritating and provoking classic ovulatory pain.
Ovulatory spotting is due to a sharp decline in estrogen (hormone overhang) which usually peak a few days before ovulation (LH surge) which causes a little flaking of the endometrium.
The time to maximum concentration of LH is called “LH surge” and usually lasts 36-48 hours. And consists of multiple releases of hormones in large amounts, secreted in a pulsatile.
The peak determines the dominant follicle maturation.
Ovulation, namely the release of ovum from the mature follicle, occurs 16 to 32 hours after the start of the peak.
Ovulation then simply means that expulsion by a follicle of a mature egg, an act that lasts about 15 seconds.
I remember a post that he had simplified this step with an example on the fuel of a car “because ovulation occurs, there must be blessed this LH surge, but you must not view it as a gas that inflates a balloon, which burst when the gas has reached the maximum, but See it more as a fuel for your car, you can walk around an hour and arrive at a destination or ride two days before reaching the destination, but more fuel you need. .. “
This means that after the LH peak can ovulate immediately or after 1 hour, after 6, 17, 20, 29 hours etc. .. etc. .. there is a rule.
The levels of LH and FSH in the fall and remain low after ovulation to start to increase with menstruation.
The corpus luteum begins to secrete progesterone and estradiol for 14 days and then degenerates if you are not given a pregnancy, thus collapsing the levels of progesterone and estradiol resulting in menstruation.
If conception occurs the fertilized egg takes from 2 to 4 days to reach the uterus and after further 2 days start around implant.
The plant, however, is not an immediate process, then we say that starts around 6 th – 7 th day after conception and ends at around 14 ° – 15 ° day.
Then the day of conception, implantation does not occur before about a week and even after the plant need some days for the HCG, the hormone that pregnancy is detected from the stick (which exchanges with the LH ).
The urine test positivization when it detects a certain amount of hCG.
so before starting the installation (irrespective of the duration of the luteal phase) and before there is the possibility that hCG is sufficient to be detected.