Well, this is one of the first concepts I learned about when we discovered we were having twins.
We were relieved to learn that this is the most common type of twin pregnancy and eliminates the likelihood of numerous complications. While any birth involving multiples is at higher risk than most singleton babies, DiDi twins possess the lowest risk. DiDi means that each baby has it’s own amniotic sac and own placenta – they live separately and feed separately – simply sharing space in Mom’s belly.
Here’s a little diagram to help you visualize the differences:
Dufendach, K. (Artist). (2008). Placentation. [Web]. Retrieved from http://commons.wikimedia.org/wiki/File:Placentation.svg
If you’re interested in learning more about the DiDi & other types of twins (MoDi or MoMo) and their implications, check out this blog post on hellobee.com