Afterpains are sharp abdominal pains that occur in the first few days after childbirth. These are normal uterine contractions that slowly shrink the uterus back to normal size. Afterpains are most noticeable during breast-feeding; breast-feeding triggers the release of oxytocin, which in turn causes the uterus to contract.
You may not have afterpains after your first childbirth. If you do, they aren't likely to be too painful. However, if you have given birth before, you may have sharp afterpains for the first few days after delivery. These pains usually begin to subside by the third day after childbirth.
If afterpains are severe, your health professional can prescribe a safe and effective pain medication.
WebMD Medical Reference from Healthwise