You're definitely not too far along to switch. I switched right about where you are during my 2nd pregnancy. It just sounds like the practice isn't a great fit for you. And that's fine. I ended up with a wonderful OB who spent lots of time hand-holding (I was needy b/c of complications I had with my 1st ) and really cared about me as a person and a patient.
Do you have anyone you can ask for referrals now that you've been in town a bit longer? That's the best way to find a good dr. Then, I'd pick 2 and ask to meet with them before making a decision.