Women of childbearing age who experience delayed menstruation, provided pregnancy is ruled out, usually get their period in about 7-14 days after taking progesterone tablets. Progesterone tablets are a progesterone-based medication that has some menstrual stimulating effects. However, before taking progesterone tablets, women must do ultrasound examination, when the uterine lining grows to about 1.2cm and the uterine cavity is open, without the occurrence of the uterine cavity, cervical adhesion, the uterine lining is peeled off in order to come to menstruation. If a woman has delayed menstruation but the endometrium is thin, for example, the endometrium is about 0.5cm thick, even taking progesterone tablets will not result in the onset of menstruation. In this case, estrogenic medications need to be given to make the endometrium grow thicker and then progesterone tablets need to be added to make menstruation come. In addition, progesterone tablets need to be taken under a doctor’s supervision, and care should be taken to maintain a relaxed mood and a regular life while taking the medication.