Most women experience swelling and pain in their breasts before their period because of breast enlargement. This is a more common symptom in women. Breast enlargement is mostly benign and does not affect the body too much, so this kind of swelling and pain does not need special treatment. It is recommended that you wear relatively loose and comfortable underwear when your breasts are swollen and painful, and do not wear tight underwear, as this may affect the blood circulation of the breasts. It is also recommended to go for breast ultrasound and mammogram every six months, and if other lesions are found in the breast, they should be treated in time. The mammary gland is the organ most prone to lesions in women, and regular screening of the mammary gland and cervix should be conducted every year.