My OB doesn't really check unless there's a reason to do so.
I haven't been going to my MW since november because I've been seeing my OB every week, so I don't know about her.
Even when I had contractions every 2 min. for a few hours, my OB still said we'd wait and see how it goes (I was 34 weeks and we were hoping they would stop, and they did).
And that was before she really knew my views on it, since we had not discussed it at all before then.
(My views really...