If the chest swelling disappears before menstruation, the possibility of conception is considered, but it is not certain. If you usually have chest swelling before each menstrual period, and now the swelling disappears before your period. If you have sexual intercourse without contraception, the possibility of pregnancy cannot be ruled out, but it is not a specific sign of pregnancy. In case of pregnancy, the nipples and areolas often become larger and darker, Montserrat nodules may appear in the areola area, and frequent urination may occur. All of these symptoms suggest the possibility of pregnancy, but there are tests that need to be done to confirm this. Usually a serum human chorionic gonadotropin test can be done after sex and an early pregnancy test can be used if your period is more than three days overdue, both of which can determine if you are pregnant.