If you use progesterone soft capsule to induce menstruation, you can take it for three days and most of them will get menstruation 3-7 days after stopping the medication. If there is still no menstruation on the eighth or ninth day after stopping the medication, the following possibilities should be ruled out: 1. to rule out the possibility of pregnancy, you can use early pregnancy test paper to do the corresponding test. 2. to rule out the possibility of premature ovarian failure, you can do the sex hormone six laboratory tests to understand whether there is the possibility of ovarian failure. 3. to rule out amenorrhea caused by uterine adhesions, you need to understand the reasons for taking progesterone. The above mentioned examination should be done to understand the cause and then give the corresponding treatment according to the cause.