Hello, and I hope I can help you today. A bicornuate uterus is a uterus that is shaped like a Y. You are born with it and it does not ever go away. If the baby is in a certain position, or after the first trimester, the pregnant side gets so much bigger than the non-pregnant one so it sometimes is hard to see on an ultrasound. Bicornuate uterus does cause an increased risk of the baby facing the wrong way or the placenta implanting in the wrong place. So it is not unusual that you have both in this case. Your did not mention how far along you are in the pregnancy, but 75 percent of placenta previa diagnosed in the first and second trimester go away by term. If you still have a placenta previa after 35 weeks, it is unlikely to go away at this point and your doctors will plan a c/section for delivery. The position of the baby at that point really is irrelevant because you cannot deliver vaginally with a complete previa. We generally recommend early delivery before labor starts to help avoid the risks of bleeding. Risks of placenta previa are are mainly related to bleeding. Any bleeding or spotting, especially in the third trimester, needs to be evaluated promptly in a hospital because it can trigger preterm labor and unpredictable hemorrhaging can occur. To help prevent this, we generally recommend no high- impact activity (including deep penetrative sexual intercourse) to help prevent bleeding episodes in the third trimester. So the fact that the baby is breech is only relevant if your placenta previa goes away, because if the baby is breech at term then it is also not recomended (at least in the US) to deliver vaginally. So you would need a c/section in that case too. So in summary, the placenta previa is the risky part, not the breech presentation. I hope your previa goes away by the time you are full term and I was able to adequately answer your question today. Best wishes for the rest of the pregnancy, Dr. Brown