OB disappoint

I am pretty bummed about my relationship with my OB. She's extremely experienced and I trust her opinion but I feel so uneasy around her! Every time I call about a question/concern I feel like they brush me off and make me feel like I'm overreacting. I've called about three times my entire pregnancy. That's it. I understand that she's been in this profession for 30+ years but this is my first pregnancy and all new to me! Is Anyone else feeling disappointed with their OB?