Causes of breast swelling and pain after breastfeeding, there may be the following: 2-3 days after childbirth, the body of the prolactin increases, the milk ducts are not very smooth, which will lead to the milk can not be well discharged, there will be a feeling of swelling, that is, the breasts will be more swollen. If the milk ducts are not clear, the milk will stay in the breasts, and prolonged obstruction will lead to swelling of the breasts, and longer time may lead to mastitis due to bacterial infection. If a woman suffers from breast enlargement, in this case, it is not because of more milk that leads to distension, but due to the milk squeezing the enlarged breast mass, which in turn can squeeze the milk ducts, resulting in milk not being able to be discharged smoothly, leading to distended breasts. How to relieve postpartum distended breasts: First, you can apply hot compresses. Use a warm towel and place it on each side of the breast. After applying hot compresses, you can use a breast pump to suck out the milk, which can effectively relieve the swelling and pain of the breasts. At the same time, with a more appropriate breast pump, you can discharge the milk that can not be discharged from the milk ducts, which can reduce breast swelling and pain. Postpartum moms should choose a bra without steel rings and made of cotton, which is good for skin and breast swelling, as well as milk drainage from the milk ducts. At the same time, you can choose a relatively simple massage. After a hot compress on the breast, grab the root of the breast with 5 fingers and massage in the direction of the breast towards the nipple, repeat more than 10 times, try to stimulate the milk ducts to discharge the milk, and reduce postpartum breast swelling and pain.