 A bicornuate uterus is an indication for increased surveillance of a pregnancy, though most people with a bicornuate uterus are able to have healthy pregnancies.People with a bicornuate uterus are at an increased risk of recurrent miscarriage, preterm birth, malpresentation, disruptions to fetal growth, premature rupture of membranes, placenta previa and retained placenta (which can lead to postpartum hemorrhage).This is due to the distortion of the normal shape of the uterus, distortion of the cervix leading to cervical insufficiency, or under-vascularization of the endometrium as the pregnancy requires more blood supply.