Hi, I am so sorry that you lost your babies, it doesn't really seem to get any easier with time does it? Even when we go on to have another, we don't forget the ones that we have lost.
I can't really tell you what is possible, but all I can say, is ask. If there is any way to know, then you should.
My baby was taken away for testing also, but I was never told anything. My biggest regret in life is not knowing the sex of my baby. If I could change anything, I would change that. I wish so much that I could have given that baby a name, and more of an identity, and a sex does that.
If there is a way, take it. Good luck. Let us know.
Alexander Jordan is nearly 2!