It depends on whether the place you go to has the 3D machines there.

Unfortunately I never got to have a 3D scan done either.

There is a place called Early Image that does 3D & 4D scans done. I think prices start from around $130 but they aren't covered by Medicare as you do not need a referal to see them.

You probably won't need any more scans done unless you Dr sees that there is a medical reason for you to have one done.