After delivery, the enlarged uterus will slowly shrink back to its pre-pregnancy state, so there will be obvious contraction pain within 1 week after delivery, with the increase in the number of pregnancies, especially menstruating women contraction pain is more obvious, usually lasts 3-5 days will gradually reduce or disappear, some people have mild pain, can tolerate, is not the need for drug treatment; but some people contraction pain is very serious, can not tolerate, then you can apply pain medication. The common painkillers are aspirin, anti-inflammatory pain and ibuprofen, all of which are very effective for postpartum contraction pain. Postpartum contraction pain also has a lot of benefits, mainly to promote the discharge of the dew, strengthen the contractions and avoid postpartum bleeding.