Chest swelling and pain after intercourse during ovulation may be a normal physiological phenomenon, or it may be caused by pregnancy, breast enlargement, etc. The cause should be clarified and treated for the cause. Common causes and treatments 1, normal physiological phenomenon: during ovulation, due to the role of estrogen and progesterone, hormones rise, resulting in some women’s chest uncomfortable, painful symptoms, but also accompanied by irritability, after the onset of menstruation can be gradually relieved, this is a normal physiological phenomenon, without much intervention; 2, pregnancy: pregnancy during intercourse pregnancy chances are greater, women may also have symptoms of chest pain when pregnant The patient should go to the hospital for blood HCG examination and ultrasound examination to clarify whether the pregnancy and the location of embryo implantation; 3, breast enlargement: the main manifestation is breast swelling and pain, which can involve both sides at the same time, but mostly one side is heavy, touching the breast by hand can feel nodules of different sizes, flat or irregular shape, soft texture, the boundary is not clear, no adhesion with the skin and deep tissue, can be pushed. Patients should go to the hospital in a timely manner and follow the medical advice to use prolotherapy pills and xiaojin pills to relieve the symptoms, and if necessary, surgery can be performed. Note Patients need to relax, avoid stress, eat lightly and wear loose underwear to reduce the pressure on the breast, which can appropriately relieve breast swelling and pain.