monochorionic identical twins?!

Mkmt
Just had our first ultrasound today at 5 weeks, six days. Two strong heartbeats and the doctor tentatively identified them as monochorionic twins, meaning they have separate amniotic sacs, but share a placenta. 
We're shocked and beyond excited...but also terrified. I'm trying to stay off google, but I did read a little about all of the complications with identical twins and I'm pretty freaked out. 
Anyone pregnant or have identical twins?!?