Before ovulation, there will be chest swelling and pain, because before ovulation, that is, the follicle maturation period, the body’s estrogen level will increase, which can cause breast vasodilatation, edema, which will cause pain, and wait until after ovulation, the body’s estrogen level will be reduced, and the swelling and pain will disappear, which belongs to the physiological changes. The duration will not be more than 5 days, more than 5 days there is still swelling and pain, consider with the ovulation is not too related to breast disease has a certain relationship, because breast hyperplasia, nodules can cause uninterrupted pain, for life and the body will also bring some harm, need to go to the hospital to register mammography breast ultrasound examination, to determine whether there is breast disease, according to the situation of oral medication to carry out The treatment can be carried out by oral medication according to the situation, to avoid affecting the health of the body.