Breast swelling and pain, increased vaginal discharge, it might be that menstruation is coming. Breast swelling and pain are generally manifestations of mammary gland hyperplasia. The symptoms of mammary gland hyperplasia typically include cyclical breast swelling and pain, which often appear or worsen before menstruation and subside or disappear after menstruation. Some patients do not experience obvious cyclical changes; some may have swelling and needle-like pain in one or both breasts, which can extend to the shoulders, upper limbs, or chest and back areas. A few patients might have nipple discharge; the discharge can be yellow, brown, or bloody. The disease course can sometimes be long, but symptoms often disappear or lessen after menopause.