Looking for a new OB

So I've had some concerns with my OB from the time I first started seeing him last December. Since I am on prometrium and high risk I expected him to monitor me more than normal. Well I do not feel he is taking my history of miscarriages seriously and I feel more like a burden to him than anything. I decided I needed to not only feel fully comfortable with my doctor but also confident in his care, therefore I am in search of a new OB. I have had a couple of referrals and when I looked up they doctors they had mixed reviews. There are 2 I'm really interested in but the downside is that they're both really busy (I guess that's a good sign). I have an appointment set up for 7+5 with one of them. His receptionist was so sweet! She told me that even though he couldn't get me in for 3 weeks they could order HCG and progesterone tests for me. She also noted that if I thought I was miscarrying they'd squeeze me in to get a quick ultrasound. This was so comforting compared to my current doctor who just blows off all my concerns. I'm still waiting to talk to his nurses but I feel pretty good about this doctor so far. I'll probably try 2 doctors to see which one I like more.