One sore breast is not an indication to determine pregnancy. After early pregnancy, due to the change of hormone level in the body, breast changes can occur, such as increased areola, darker color, and enlarged monsoon nodules found around the areola, which are more sensitive to the symptoms and can reveal the gradual enlargement of the breast, which can assist in diagnosing the symptoms of early pregnancy. For the final diagnosis, HCG or ultrasound is needed to confirm intrauterine pregnancy. Pregnancy can be associated with drowsiness, increased eating, more rejection of fatty foods, and even early pregnancy symptoms of nausea and vomiting. The earliest diagnosis of pregnancy is the discovery of a significantly elevated HCG that doubles every other day, or an ultrasound examination after 7 weeks of menopause that reveals intrauterine pregnancy. Pain in one side of the breast, consider the symptoms of breast enlargement, ensure that the recent stress is not too great, can not be angry, if necessary, to the hospital.