One thing that the peri said that was surprising was that even though there's 3 babies, 3 sacs, and 3 placentas, there's a 30% chance that two of them are identical twins and split so early that they were able to get all their own stuff. Interesting. He said there's no way to tell unless they look a lot alike when they are born or we can do a DNA test if we really want and are curious.
We go back in 4 weeks, right before we leave for Mexico, and have our BIG u/s where we will find out the sexes.