7 years ago I had mono twins they were born at 24 weeks - 1lb 9oz and 1lb 10oz. It was rough and scary. They had twin to twin transfusion syndrome. And now, I'm about 24 weeks pregnant with my second set of mono twins and so scared. I'm about at the same as I had my first. So crazy how rare it is to have momo twins to began with let along be having a second first were boys now I'm having girls.