The following symptoms may occur on the day of ovulation: 1. changes in the nature of the leukorrhea. The amount of leukorrhea increases during ovulation, the consistency of the leukorrhea is the highest, the leukorrhea is transparent and can be stretched, and the longest degree of stretching can reach more than 10 cm. This is due to the large amount of cervical mucus contained in the leukorrhea. This is because the leucorrhea contains a lot of cervical mucus. The change in leucorrhea occurs almost every month, so it can also be used as a way to determine ovulation.2. Slight back pain may occur because of the irritation caused by the egg breaking through the ovary, but this symptom is so mild that it is ignored.3. Some women may experience a little ovulatory bleeding, which is caused by the rupture of a few capillaries when the egg breaks through the ovarian wall. The amount of bleeding is very small. There are individual differences in the appearance of these symptoms, and not every woman will have similar symptoms during ovulation.