OBGYN

I've always gone to the same obgyn practice. I usually see a female PA who I aboslutlely love, but have rarely seen the actual doctor. The few times I have seen him, he's been nice enough, but doesn't exactly put me at ease. I could just be him or the fact that I don't know him well. Now that I am first-time pregnant, I am wondering if he is really the doctor for me... My first appointment is scheduled for next friday. Reviews on Google are mixed, but that's pretty typical since there aren't many choices in my town. Should I just put my trust in the practice and see how it goes or should I roll the dice with a new provider? How long do I have before I have to decide?