Ovulation occurs about 15-20 days after a medication abortion. The time to return to ovulation varies with individual differences. If ovulation resumes relatively early, menstruation will occur about one month after the abortion. If the ovulation time is relatively late, the menstruation will be delayed. It is recommended not to be nervous once the menstruation is delayed. If you have sexual intercourse within one month after the medical abortion, if you have not had your period by the time it is due, you need to exclude the possibility of pregnancy again, you can use the morning urine to do an early pregnancy test, and if you are not pregnant, it is recommended to continue to give observation. If you are not pregnant, we recommend that you continue to observe the pregnancy. If you still do not have your period, you can go to the hospital and have the appropriate tests done to find out the cause of the absence of your period and then deal with it.