Corpus luteum
The corpus luteum is the structure that forms from the follicle after ovulation and produces progesterone during the luteal phase.
If pregnancy does not occur, the corpus luteum breaks down, progesterone falls, and your period begins.
Its health is part of what determines luteal phase length.
Sync your whole cycle, automatically
PhaseBloom builds your meals, workouts, and skincare around your exact cycle phase, day by day.