If you need to delay menstruation because of some inconvenience in your daily life, you can take an intramuscular injection of progesterone to induce menstruation, mainly to make the progesterone in the body reach a certain level so that the uterine lining will not be shed and menstruation will not come. For women this method of delaying menstruation, the only bad thing is that because it is intramuscular injection of progesterone to delay menstruation is possible to come to menstruation will appear relatively more menstruation, but it will not be particularly much, this point is the only bad thing, will not cause other abnormal phenomena. If it is to delay menstruation, it is best to give the medication again under the supervision of a doctor. In addition if women who are allergic to progesterone are not allowed to apply progesterone to delay menstruation.