feeling down pregnant?

I’m currently 11 weeks pregnant and I been really detached from my fiancé. I’m not sure if it’s my hormones but I feel insecure as i’m starting to gain weight and recently found out he lied to me about something he swore he wasn’t lying bout for years. It questions if I really want to have this “family” with him. Sometimes I wonder if i’d be happier elsewhere. I’m so excited and really wanted a baby, and can’t wait. But i’m not sure if I want to be with him. I think him lying for another time AGAIN, just did it for me. I’m not sure if it’s just my hormones or what. But the trust is completely out. I need advice. Has someone felt this way while pregnant or may it just be all in my head???