Hi hun,
Sorry to hear of your loss. DH and myself went to see a genetic counsellor who told us that Trisomy 13 is not genetic and we have since had a beautifull healthy girl. Have hope, I know it is hard and very scary. Trisomy 13 is quite rare, 1/10,000 I think so we were the unlucky ones.
If you have any questions at all ask away.
Take care,
Dianne