I had an ultrasound today and my sons arm was over part of his heart and the tech walked out of the room for 10 minutes. She said she seen some of the heart but she said the way the reflection of his arm it looks like he has a hole in his heart. (Freaking out) the doctor came in and said I shouldn't be worried because he wasn't sure if he seem it correctly because of the shadow of his arm over his heart. I have a follow up ultrasound appointment in two weeks. I'm kinda worried for my son. Has anyone experienced this before? Does anyone have children with a hole in his/her heart? Should I be worried?? (I'm 20 weeks and 2 days)