J.G.
My son was born by scheduled c-section at 39 weeks. At 36 weeks he was head down. I never felt any unusual pressure or anything strange. As by OB was delivering him she said, "Oh my God, there's a butt!" My point is, things can change at the last minute, and it's beyond your control so there's not benefit to worrying.
As an ICU nurse I have no doubt that you've seen some scarry things. Consider where you work. I'm sure football coaches have seen more than their fair share of twisted knees and ankles and fire fighters have seen more than their fair share of burn victims. Take a step back and recognize that the majority of c-sections come through without a hitch. Yes, it is major surgery (doesn't that just mean it's surgery done on the middle of the body?), but it is also incredibly routine. Again, if you have to have a c-section, than have faith that it was done with you and your child's best interest (and health) in mind and not taken lightly. It might not be your first choice. It might be inconvinient. But really, what's more important, a convinient birth or a healthy mom and baby.
Relax. Everything will be fine!