Congential Heart Defects?

[disneymommy78]

Does anyone have children with congential heart defects? I am 17 weeks 5 days pregnant with twins (girls!) and the OB/GYN is concerned about a possible heart defect (problem with her valves and heart rate). Her heart rate is running 80s-110s while Baby A is running 135-150 which our OB/GYN says is normal. I am being sent for a Fetal EKG/Echo next week and freaking, but trying to stay away from google.

Thanks!