The best time to choose an ovulation induction is around day 5 of the menstrual cycle. When ovulation is initiated on day 5, the medication that is injected into the body to initiate ovulation stimulates the follicles to develop. Once the follicles have matured, they will be able to be released. Ovulation is usually initiated around the 5th day of menstruation, and the medication should be used for 7-10 days in a row. Depending on the growth status of the follicles, the preparation is usually chosen to start on the 3rd-5th day of menstruation. Due to individual differences, some may start earlier, on the 2nd day of menstruation, and some may start later, on the 5th-6th or even the 7th day of menstruation. It is recommended to go to the hospital on the 5th day of menstruation if you need to promote ovulation. Actively cooperate with the treatment under the guidance of professional doctors.