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Multiple pregnancy overstretches the uterus, which increases the risk of heavy bleeding (hemorrhage) into the abdomen or from the vagina. Hemorrhage can occur at any time before, during, or after (postpartum) delivery, but it is more common in the postpartum period.

Bleeding from the uterus is controlled by how well the uterine muscles contract after childbirth. Treatment to control bleeding commonly includes massaging the uterus and giving oxytocin, a hormone medicine that helps the uterine muscles contract. Other medicines may also be used.

If you hemorrhage heavily after childbirth, you may need a blood transfusion, particularly if you have been anemic during pregnancy.