Ten days after ovulation, the nipple color becomes darker, may be due to the body after ovulation estrogen, progesterone gradually increase caused by, mostly normal.
After ovulation, the ovary enters the luteal phase, during which the corpus luteum forms and gradually develops under the action of a small amount of follicle stimulating hormone and luteinizing hormone. The corpus luteum secretes estrogen and progesterone, causing changes in the endometrium during the secretory phase.
The body reaches the peak of estrogen and progesterone 7-8 days after ovulation. Under the action of estrogen and progesterone, the ducts and follicles of the breasts develop, and the nipples and areolas are colored, so the darkening of the nipples and areolas during this period is mostly a normal phenomenon.
If there is any other discomfort in the breasts, it is recommended that the patient be examined and treated under the guidance of a professional doctor.