Ovulation is around the 14th-16th day before the next menstrual period. Usually both ovaries take turns to ovulate, and there are some clinical manifestations during ovulation. Therefore, women can determine whether they are ovulating according to the following aspects: First, they should pay attention to the condition of the white belt. During the ovulation period, due to the change of hormone level, women’s leucorrhea will appear to be stretched. The leucorrhea is more viscous and there will be slightly more leucorrhea. A few women will also experience ovulatory bleeding, which is only a little bit during ovulation. Secondly, you can use ovulation test paper or do ultrasound monitoring to know if you are ovulating. The ovulation test will be strongly positive during ovulation, and ultrasound will indicate the presence of mature follicles in the ovaries. Thirdly, for women with very regular menstruation, you can also figure out the ovulation period by projection.