Clinical urge menstruation with the most is progesterone, it is recommended that you can take oral progesterone pills, once a day to eat, once to eat two pills, take three consecutive days or five days, stop the drug 3-7 days will come to menstruation. When taking the medicine, you should pay attention to the following points: 1, allergic to progesterone can not be taken. 2, in the taking of progesterone can not be missed, once missed may cause irregular vaginal bleeding. 3, pay attention to if it is the ninth day after stopping the medicine and still did not come to menstruation, to rule out the possibility of pregnancy, if it is not the case of pregnancy, must rule out the amenorrhea due to premature failure of the ovarian function. It is recommended to take a blood test for sex hormone six to find out whether the follicle stimulating hormone is normal.