The next day after coitus breast swelling and pain is not able to judge is pregnant, there are other factors caused by the first, may be the symptoms of pregnancy, after coitus fertilized eggs in the body hormone secretion increase, the body will produce stimulation, so there will be breast swelling and pain. Second, may be the body hormone secretion disorders, endocrine disorders caused by breast swelling and pain, need to go to the hospital for sex hormone six examination to determine the body’s condition. Third, it may be the symptoms of breast diseases, such as mastitis, breast hyperplasia or breast tumors and other diseases, after the appearance of breast swelling and pain, it is recommended to go to the hospital in time for examination, can not be judged by the symptoms of breast swelling and pain of a certain disease, you need to carry out a specific examination to be able to judge.