During menstruation, breast swelling and pain is not normal, because generally, after ovulation, there is progesterone secretion, which will stimulate the breast cells to proliferate, so there is breast swelling and pain, but breast swelling and pain is usually after menstruation, breast swelling and pain will disappear. Therefore, if you have breast swelling and pain during menstruation, you should have an ultrasound to rule out the possibility of breast hyperplasia. Breast enlargement is characterized by breast tenderness and swelling, which is less related to the menstrual cycle and more related to mood swings, anxiety and anger. For the treatment of breast enlargement, you can use Jia Wei Yi Pill or Lactoferrin, or Xia Gu Cao capsule, and avoid mood swings and anxiety to avoid aggravating the condition. In addition, underwear should wear loose, pure cotton underwear, every night to massage their own breasts, can also relieve pain symptoms. Diet, pay attention to avoid high-calorie as well as high-fat food can be.