MG
How nice of your DH to suggest the 3D scan!! How sweet.
My U/S scan which as you know i had on thurs, was a relatively quick one although the sonographer said there were no abnormalties. There is no cleft palate or anything.. and yes you do have a small hole in your heart untill your born, and it normally does close.
I was unfortunate enough to have a VSD repair when i was 8 and i have made a full recovery.. Mind you they didnt pick it up on the u/s coz it was almost 26 years ago!!
I think you should take up DH on his offer and get the 3D and then you will know for sure!
Keep your receipts just in case!