Modi twins...what?

So once we started to wrap our heads around the shocker of twins, 2 babies at once, with no medical help, just luck. Our doctors told us we were having modi twins. What, twins are twins we had herd of fraternal or identical but hadn't thought more into it. Well there are lots of twins. Momo, modi, or didi. Didi are fraternal separate amniotic sacs, separate placentas, least amount of complications. Modi twins still have their own amniotic sacks but share a placenta. With the placental share there is a 10-15%chance the babies could develop twin to twin transfusion syndrome(ttts). So we would need ultra sounds every two weeks to watch the babies closely. But our doctors told us not to worry about it. So like all people i started googling like crazy. Guess what ttts is scary!!! And there are lots of stories that end up with both babies dying. Great! Well lucky for us there is one scarier type of twins that's the momo, they share everything, sacs and placenta. The risks are super high with this type of pregnancy. Cord entanglement, twin to twin, and tons of bed rest. So i was glad i was the middle of the risk factor.