Stop menstruation for 1 year breast swelling and pain and menstruation again may be normal or abnormal, combined with whether the patient is postpartum or menopause comprehensive analysis. 1. Postpartum breastfeeding women in breastfeeding due to high prolactin, not ovulation and other reasons can be in breastfeeding has been amenorrhea, after the cessation of breastfeeding, ovarian function recovery, estrogen and progesterone back to normal, breast swelling before the onset of menstruation, menstruation resumption of menstruation. This is a normal physiological reaction. Oral medication can cause menopause for a year, after stopping the medication, menstruation returns to normal, breast swelling and pain before menstruation, which is also normal. 2. A year after menopause, breast swelling and pain and menstruation may be caused by oral estrogen, endometrial hyperplasia, endometrial polyps, endometrial cancer or ovarian tumors, and so on, the body’s high level of estrogen can lead to breast swelling and pain, and menstruation. This is a pathological condition, which can have a certain impact on women’s health and life safety, and needs to be diagnosed and treated, and is not a normal condition. After a year of menopause, menstruation should be timely consultation, under the guidance of the doctor to improve the examination, clear diagnosis and treatment.