Women of childbearing age can clarify their ovulation date by the following methods: 1. If the menstrual cycle is usually regular and ovulation is relatively fixed, 14 days before the next menstrual period, that is, 14 days before the date of the next menstrual period, pushing forward is the ovulation period. 2. If the red line is as deep as the two red lines, and then continue to test the two red lines begin to weaken, then enter the ovulation period. 3, if the usual menstrual cycle is not regular, you can also apply ultrasound to detect the development of follicles to determine their own ovulation day. If the follicles develop to about 1.8-2.0cm, you need to continuously test the ultrasound after the day of ovulation. 4, by observing the leukorrhea, during the ovulation period, the leukorrhea is thin and stretched, which can also help determine the day of ovulation.