Very rare indeed, this is the thing where you read stories in magazines about people that fall pregnant whilst already pregnant. Babies can be conceived at different times, one in one womb and the other in the second womb..its bizarre.
Apparently the more completely seperate they are the better success, as its technically two complete wombs but just half the size as they didnt fuse together to create one whole. So its kind of like carrying multiples as there is less room, you can only hope that there is enough room and stretching capacity. thats what Im going to find out on the 31st , how big each side is/is one side better than the other etc. They say that you are lucky to go full term and it usually is the case of premature babies/c section being required. There is many woman out there though that go full term with this and need induced, can only hope for the best. take care x