Afterbirth pains become progressively more common after each pregnancy because of increasing difficulty of the uterus to return to normal size.  They normally increase at the time of nursing.  Except for the positional impossibility during nursing, good relief can usually be accomplished by lying flat on the abdomen without a pillow for the head.  Naproxen or Ibuprofen may be given at the time of hospital discharge to ease uterine cramping.