Husband & his ex.

So I just recently married my hubs. We’ve been together for two years. His ex whom I’ve only had words with once, when we first got together. She’s back in town I guess. Well we see them tonight with her husbands family. I work with her MIL & I’m a grown ass woman so Ofcourse I’m not rude I just smile & go on. We’re getting ready to leave, & I’m loving on my hubs & he rejects my kiss so I’m like w/e it’s typical of him to be that way. & I’m waiting for him to get up so we can go and I’m rubbing his back & he loudly tells me to stop. I’m mad I walk out. We don’t talk any more. We go to Walmart & he’s now trying to live on me touch me & hold my hand🙄 I reject everything. We see his ex again and he starts running his mouth to me asking if I even wanna be with him. Am I being crazy? I’m also 13 weeks pregnant so my hormones are off the chain. I’m more hurt than anything. Opinions?