What does regressing corpus luteum indicate?

Regressing corpus luteum indicates the end of the luteal phase of the menstrual cycle. The corpus luteum is a small, temporary structure that forms on the ovary after ovulation. It produces the hormone progesterone, which is necessary for the maintenance of pregnancy. If pregnancy does not occur, the corpus luteum regresses and progesterone levels decline. This decline in progesterone levels triggers the onset of menstruation.

Regressing corpus luteum can also be a sign of certain medical conditions, such as polycystic ovary syndrome (PCOS) or luteal phase defect. PCOS is a hormonal disorder that can affect ovulation and menstrual cycles. Luteal phase defect is a condition in which the luteal phase is too short, which can make it difficult to become pregnant.

If you are experiencing irregular menstrual cycles or other symptoms of hormonal imbalances, such as acne or hirsutism, it is important to see your doctor to rule out any underlying medical conditions.