Hi,
the whole thing is a very grey area and definitely a very personal one. I decided not to do any of the testing with all of my pregnancies as I had made up my mind it wouldnt change my decision to have the baby. DH was a little more worried and suggested maybe we should do it so if there is a risk at least we'd be aware of it. In the end we decided against it as we thought it would only make us worry more. My Ob was fine with it.