It is also possible to ovulate without having a period on progesterone. Progesterone has the effect of regulating menstruation and it can induce menstruation. However, if your period doesn’t come during or after you stop taking the medication, it is possible that you may be ovulating. If you are not planning to conceive, it is safer to use contraception during intercourse. Progesterone is a kind of progesterone under the guidance of the doctor according to the course of progesterone can promote menstruation, but if after stopping the drug more than a week has not come, you need to go to the ultrasound to observe the thickness of the uterine lining to see whether to meet the conditions of menstruation, according to the results of the examination, you can choose whether to continue to use the drug. Progesterone does not interfere with whether the body ovulates. Therefore, during the period of using the drug, there is also the possibility of accidental ovulation, if the body appears abnormal, timely consultation and examination, to find out the cause of the disease after treatment to avoid delays in the disease!