The breast swelling and pain after intercourse may be caused by physiological changes, violent extrusion, breast enlargement, etc. Specific analysis is needed to take the appropriate relief measures. 1, physiological changes: the breast is stimulated during sex, the nipple becomes hard and congested, and chest swelling and pain can occur. In addition, women who are ovulating and about to menstruate are also prone to breast swelling and pain after intercourse due to changes in estrogen and progesterone levels. Generally no treatment is needed, you can temporarily observe, local hot compresses, usually can be relieved within a few days; 2, violent extrusion: the process of intercourse to the breast relatively violent extrusion, causing minor damage to the gland, resulting in chest swelling and pain. It is recommended to observe first, and those who continue not to relieve are recommended to seek medical examination to clarify whether there are other injuries; 3, mammary gland hyperplasia: breasts with mammary gland hyperplasia lesions, intercourse will aggravate the chest swelling and pain. By adjusting emotions, sleep and diet, many hyperplasia can be relieved on their own and pain can gradually disappear. Patients with persistent severe pain can choose medication, such as breast fetish elimination and prolotherapy pills. Slight swelling and pain in the chest after intercourse is usually normal and can be observed temporarily. If the symptoms persist or worsen, you should seek medical attention to clarify the cause of the pain and treat the cause so as not to delay the condition.