Healthy pregnancy after cystic hygroma?

My baby was 11 weeks when the doctors discovered a huge cystic hygroma. (A fluid filled cyst on the back of the neck caused by a blockage of the lymphatic system.) The size indicated a serious problem, and although all tests came back negative for chromosomal abnormalities, she passed away at 22 weeks. I read one woman's story about how her baby was diagnosed with Trisomy 13, and it sounds like that's what my baby had. Both had hands that were permanently fused into a fist, and a huge hole in her heart. I think this is what my baby had, but the autopsy results haven't come in yet. Has anyone experienced this and had a healthy or multiple healthy pregnancies afterwards? I am terrified this will happen again, and I am 5 weeks into my second pregnancy. 😔