Progesterone

Progesterone is a natural hormone in the body that plays a role in the menstrual cycle, pregnancy, and development of embryos in humans and other species. It is part of the steroid hormone group called progestogens. If someone has PCOS, the levels of different reproductive hormones might be off. Some, like LH, testosterone, DHEAS, androstenedione, and prolactin, might be too high. Others, like FSH and progesterone, could be too low.