I don’t know what to do anymore😔

I’m 14wks pregnant. My fiancé was so over the moon when we found out, and had been all for the baby, by making sure I was taking care of myself for the Baby and everything. He would always talk about the baby. But the past couple weeks he has had the worst attitude I’ve ever seen. He’s been so rude and snotty to me. I’ll go to ask a question and as soon as I just say “hey” he snaps at me. He never wants to be around me unless it’s for sex, he’ll always just spend his time on his games now, and when we are together he’s mean, he always tells me to shut up and leave him alone. And all I’m doing is asking a question that HAS to be asked and it’s simple! Cause believe me I’ve been trying. To pull back cause every time I speak he yells, so I try not to bother him much. I tried talking to him about it, and he just goes “oh really? I’m the one with the bad attitude (referring to, I called him an asshole one night because he was so rude to me and made me cry so I said “you are acting like an asshole”) and if I try and talk about it he gets defensive and then gets snotty with me again and ignores me. I’m at a loss. We’ve never been like this. And I feel like I can’t even enjoy my pregnancy anymore. This is not how I pictured my first pregnancy to go at all. I have this week off work and I just feel like I should leave and go back to my moms for the week, it’s an hour and a half drive. But I already know if I leave he’s gonna say I’m being stupid