Ovulation can occur in normal fertile women in the middle of menstruation, ovulation is a normal phenomenon of follicular growth in maturity, most women ovulation does not have any special symptoms or discomfort, may appear the reaction or symptoms are: 1, mild one side of the abdominal pain, most of the follicular fluid irritation of the peritoneum or a small amount of pelvic effusion, most of the pain will be relieved on their own without the need for medication, ultrasonography can be seen in a small amount of pelvic 2, secretion changes, changes in hormone levels during ovulation cause increased secretion, thin, transparent, increased pulling degree. 3, after ovulation, the basal body temperature will rise 0.3-0.5 ℃, so there will be a slight feeling of warmth in the body. 4, some women may experience a small amount of vaginal bleeding, gynecological examination to exclude other organic pathology, the bleeding is related to ovulation, known as ovulation bleeding, bleeding, bleeding, small amount, The bleeding is small and short-lived, not more than a week. 5, there may also be breast swelling and pain, the swelling and pain is reduced after the onset of menstruation, breast swelling and pain has no specificity, not necessarily related to ovulation.