Abortion and bleeding
Abortion, more correctly termed infanticide, can result in severe uterine and/or vaginal bleeding for women who undergo the procedure.  Anecdotally, the bleeding often lasts for weeks and can be extraordinarily painful.
The medical profession refers to this phenonenom as retained tissue. It usually occurs a few days after the "procedure". The most common cause of retained tissue is small clots or minute amounts of the tissue lining of the uterus being discharged. It can resemble a period, but unlike this entirely natural, God-given process this bleeding represents the murder of an unborn child.
Some doctors will proscribe Motrin, Advil or Ibuprofen 800 mg (4 tabs) every 6-8 hours, but the best way to avoid infanticide-related bleeding is to not murder your unborn children.