Originally Posted by
atomic sagebrush
About 4% that one or the other of you does. But Trisomy 13 risks increase with age and Trisomy 16 is just super super common, among top causes of miscarriage and it most likely was just sheer bad luck. I know several people on the site who had had more than one loss due to Trisomies and went on to have a healthy pregnancy afterwards, and additionally many of our HT ladies who have fertilized eggs that have several of their tested embryos found to have numerous trisomies in among the normals. It does happen quite regularly, unfortunately, so while it may be worthy of investigation I don't want you to jump to the worst conclusion first.
I am so, so very sorry for your losses.