You can change your doc whenever you want. Medical records will be transferred. You can also look up reviews on new obgyn's to see if they are suitable. That's how i found mine. Good luck.
It's not too late to change doctor's. .. find one that will suit your needs and answer all your questions.. I have gotten really lucky with good doctors both my pregnancies but I have had a gyn that I hated 2 years ago at a different practice... saw her once... never again... horrible bedside manner and very rude.. I hope you find one that you like and are comfortable with
I switched Dr's 3 times, last time I switched I was 27 weeks. Dont stress over it find a Dr that makes you feel at ease and that you will truly have confidence he/she will deliver your baby. And dont forhet to check their backgrownd. (=