Hi. I just found out that I am pregnant with identical twins. I already have two children and we decided to go for number three! I found out early in my pregnancy as I went to the early pregnancy unit for some pain, which turned out to be nothing. I am excited but very cautious due to the following: The babies are in one gestational sac, not two. Also, they could only see one amniotic sac at this point, making it a mono-mono pregnancy, which they told me was dangerous and complicated. I am to return in two weeks to see if there are actually two amniotic sacs that can be identified within the one gestational sac. I was also told that even in this type of pregnancy, there is still a 30 percent chance of twin to twin transfusion syndrome and other problems along the way. I am overwhelmed with the idea of twins with two young ones already, and also with possible complications. Has anyone out there gone through this? I am at Kings which I now know specialises in these types of pregnancies. I know that a lot can change as I am still very early in my pregnancy, but I want to be prepared for all eventualities. By the way I have used a new login for this message as I am not ready to share this news with anyone. However I am a regular poster. Thank you to anyone who may have some more info.