After the delay of menstruation except pregnancy, you can use progesterone orally to make your menstruation come. If your menstrual cycle is normally regular and you suddenly experience menopause or delayed menstruation, you should first go to the hospital for blood or urine tests of chorionic gonadotropin level to rule out pregnancy. If the endometrium is thicker than 1.0cm, you can use progesterone orally or by injection for 3-5 days, and your period will come 3-7 days after stopping the medication. After stopping the medication, you can have your period in 3-7 days.