Another waxer here!
Waxed all the way through when pregnant with our DD - and our hospital asked you to wax or shave before c-section delivery. No stubble around my scar when it was fresh which really helped... takes about 2-3 weeks before the hair peeks back through - by which time my scar was in really good shape and not as sensitive...
Not sure what Ob's prefer overall though.
Doesn't hurt as much as you think - and hurts a whole bunch LESS than your eyebrows. Besides, I only do it every 6 weeks.
Should say though, that it does hurt a bit more when I'm pregnant - but I'm generally more sensitive in that region when I'm pregnant !
Lily