ECV experience? Breech at 36 weeks.

Lisa
I'm 36 weeks and 3 days and baby girl has not moved from her head up position. She likes to lay transverse right under my ribs and will shift between that and vertical breech, but never seems to move her head lower and never goes below my belly button. I'm a FTM and my doctor doesn't think she'll move on her own so I'm scheduled for an ECV (external cephalic version) for TOMORROW. That is when my OB can do it and she doesn't want to wait another week in case baby gets too big to flip. I'd rather try the ECV than resign myself to a C-section. Anyone had experience with an ECV? Did it work? Was it painful? Was it worth it?