When the body’s estrogen and progesterone growth reaches a high state, it will have a certain impact on the cervical secretion leucorrhea, making the leucorrhea thinner and more lacrimal. Women can usually determine whether they are ovulating by observing changes in the leukorrhea, for example, when the leukorrhea becomes transparent, thin or has a filament-like change, it means that they are in the pre-ovulation period or about to enter the ovulation day. Ovulation often occurs about 14 days before the next menstrual period, and the first 4 days and the last 5 days of the day of ovulation belong to the ovulation period. If the leucorrhea changes in this period, it means that you are in the ovulation period. At this time, if you increase the number of sexual intercourse, keep a good state of mind and avoid excessive tension, you can improve the chances of conception.