Women who experience breast tenderness will have the possibility of pregnancy, not all breast tenderness means necessarily pregnant. There are several possibilities for breast swelling and pain: First, pregnancy, after pregnancy, affected by hormone levels, pregnant women’s breasts will significantly increase in size, especially the glandular ducts of the breast will develop rapidly, which will lead to breast swelling and pain, accompanied by breast enlargement. This will occur throughout pregnancy and does not require special treatment. Second, before menstruation, a few women also experience breast swelling and pain, which is related to breast enlargement and changes in hormone levels, and most of them are also recommended for regular follow-up. Third, if the breast swelling and pain is not regular and painful in the usual way, other diseases of the breast should be ruled out, such as fibroids of the breast, malignant lesions, etc. need further examination.