Breast swelling and pain does not mean pregnancy because it can be caused by premenstrual period, breast enlargement, acute mastitis, stress, staying up too much, etc. Therefore, it is necessary to combine other symptoms and auxiliary examinations for clarification. Generally women will experience breast swelling and pain when they are pregnant, but the diagnosis of pregnancy is not sufficient evidence with only the manifestation of breast swelling and pain. Pregnancy can only be confirmed if there is a history of sexual intercourse, menopause, nausea, vomiting with dizziness, weakness of the limbs, loss of appetite, drowsiness, etc. after menopause, as well as a blood test showing a significant increase in human chorionic gonadotropin. In addition, breast swelling and pain can occur before menstruation or when the patient has breast enlargement and the estrogen level in the body is increased. If you exclude the above-mentioned cases of chest pain, you should pay attention to it and go to the hospital for detailed examination and diagnosis in time to clarify the cause of chest pain and then give targeted treatment.