I don't like my obgyn

I really don't like my obgyn. He's strange and not very helpful. He tells me the chance of miscarrying is really low every time I come in but then he says I'm not gaining any weight and tells me I need to gain more and that scares me. I also feel like he's really rude. He never tells me what the appointments are gonna consist of and just expects me to know. Does anyone else not like their doctor or am I the only one?