If you do not have your period, it is possible that taking progesterone may cause you to have your period. This is mainly because when you take progesterone, the endometrium has already started to shed, and taking progesterone again at this time cannot suppress the endometrium that is about to shed and does not shed, so even if you take progesterone, the endometrium will shed and cause you to have your period. Once you find that you have menstruation while taking progesterone, it is recommended that you stop taking the medication immediately so that your menstruation can come normally. In the case of menopause taking progesterone to induce menstruation, it is best to have an ultrasound examination before. If the thickness of the endometrium has exceeded 1.0cm, it means that menstruation will come soon, you can drink hot brown sugar water and observe that menstruation may come in 3 days. If the endometrium is relatively thin, you can take progesterone to promote menstruation.