Most of the breast swelling and pain that occurs during the physiological period is normal. Breast tenderness is related to changes in hormone levels during menstruation, and also to breast enlargement. Most of the breast pain caused by the physiological period is cyclical, before and during the menstrual period is more obvious, when the menstrual period is clean, the breast pain will disappear naturally. It has no effect on a woman’s health and does not require special treatment. However, if you have significant breast swelling and pain, it is recommended to go for a check-up at any time. For women, it is recommended to have an ultrasound of the breast and palpation of the breast once a year. The probability of breast lesions is also relatively high, so you should pay attention to keeping a cheerful mood and breast care, and wear less tight underwear, and wear better quality, cotton, comfortable underwear.