If you are afraid of menstruation, it is best to inject progesterone intramuscularly once a day and until the stitches are removed, after stopping the medicine, you will have menstruation in about 3-7 days, the surgery has been done, the stitches have been removed, and the activities will be free, so menstruation won’t be affected, so you can use this method. But you can’t take progesterone orally, mainly because after doing the surgery the vast majority of need to fasting water, if you take progesterone orally it is against the principle of fasting water, it will cause pain in the lower abdomen, flatulence and other corresponding clinical symptoms. To intramuscular progesterone, once a day, always according to the above statement, the above time to use the drug can be. In addition, it is better to avoid the menstrual period before choosing the time of surgery if it is not an emergency operation.