The Luteal Phase of the Cycle: What Happens Inside?

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The luteal phase begins with ovulation and ends when you get your period. Normally, it lasts for 11-16 days, being a relatively stable part of the cycle.
After ovulation, the corpus leteum develops in the ovary at the site of the ruptured follicle. Its cells produce progesterone preparing the female body for a possible pregnancy.
In particular, it affects the inner uterine layer, endometrium. Progesterone stimulates the formation of vascular and glandular plexuses in it and supplies it with useful substances. After this, the endometrium is ready for the implantation of a fertilized egg.
Progesterone is at its peak in the middle of the luteal phase (7-8 days after ovulation), just at the moment when the fertilized egg is attached to the uterine wall.
If pregnancy has not occurred, the level of progesterone drops 2-3 days before the end of the luteal phase and menstruation begins.

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