Before menstruation, there will be nipple and breast swelling and pain, because before menstruation, progesterone is high, and when it enters the luteal secretion period, it will stimulate the expansion of breast blood vessels, resulting in breast swelling and pain, and even when it stimulates the nipple, there may be nipple pain. Such a situation continues after the end of menstruation, or 3-5 days soon to menstruation can slowly subside, will not affect the health. However, if it lasts for a long time and does not subside after your period, it is a sign of inflammation of the mammary glands. It is recommended to go to the hospital and register with the mammography department for a breast ultrasound examination to determine whether there is any abnormality in the breasts, and you can take certain anti-inflammatory drugs orally according to the situation. If the pain is relatively recent, you can carry out local hot compresses, the temperature is about 40 degrees, you can apply hot compresses for about 5-10 minutes each time, which can be relieved.