Some oral medications can cause delayed menstruation, but not all medications can affect menstruation. Menstruation can be delayed or early due to the environment, cold, emotions, stress, etc. Oral medication may cause it if you have a cold or illness. If you have had intercourse, you should first rule out the possibility of pregnancy. We suggest you buy early pregnancy test paper and check it. If it is two bars, you should consider that you are pregnant, you should not handle it casually, plan to have a baby, pay attention to regular medical checkups. If you don’t plan to have a baby, it is best to choose early abortion. The actual fact is that you will not be able to get a good deal on your own.