The reason for the breast swelling and pain 7 days after ovulation: 1, may be the occurrence of pregnancy. 2, may not be pregnant, is the body of the progesterone level increased and caused by the swelling and pain. 3, may also be a woman suffers from breast hyperplasia, breast nodules caused by breast lesions. Therefore, when women ovulation 7 days after intercourse chest swelling pain, you can pay attention to appropriate wear loose underwear, first symptomatic treatment. If not able to relieve, need to go to the hospital in a timely manner to draw blood, chorionic gonadotropin levels, is pregnant, should pay attention to appropriate rest, to avoid the occurrence of cold and flu, you can do gynecological ultrasound after the menstrual delay to confirm the diagnosis of early pregnancy. If you are not pregnant, and the swelling and pain is obvious, you should do breast ultrasound in time to confirm the diagnosis, so as not to delay the diagnosis and treatment of the disease.