Best time for a 3D ultrasound is 28-33 weeks. More facial features are visible. Baby was just in a bad position. If u were you I'd call and let them know. Maybe they could redo it for you for free. Worth a shot!
The problem is as the baby gets bigger its more cramped in there so the tech cant get a good angle on the baby. Thats why any u/s is best done at 20weeks. I went at 34weeks for a check up and couldnt see much. I saw an part of his face with on eye. Saw part of his scrotum, a biymt of the spine and belly and his heart. But if the tech hadnt pointed them out i would of never know. Hes just running out of room in there. So thats the reason why the pictures dodnt turn out like umyou hoped for
Aw :( I'm sorry. At least you got to see her. I never got the chance to do a 3d/4d ultrasound