You know how they say you should not make decisions when you are under stress, well I found I was permanently under stress and very anxious when I was pregnant, and this is sort of when we have to make a hundred decisions - each more emotional than the next.
With my second pregnancy, I also felt that my OBGYN was not for me - though everyone else thought the sun rose and set on either side of her. I also got concerned she did not ask me certain things, and did not seem to have any real interest in me - I felt like just another patient. Not the uber-mom I felt.
I was really stressed, and then spent two months running around visiting midwives and going to other OBGYN's.
Eventually I did make the decision to stick with my original OBGYN, and I think the defining moment was when I thought I was miscarrying and the caring and professional manner she showed towards me then.
It sometimes is difficult for your doctor to hear your concerns, and sometimes even more difficult for you to express them.
Good luck at your next appointment.