Husband feels like a roommate...

Hey ladies, I just wanna know if I’m alone in this. My marriage doesn’t feel like a marriage anymore. It feels like we are just roommates that sleep in the same room. There is little to no intimacy in our relationship. The most that we even touch is while we sleep. I am plus sized and pregnant and I’m beginning to wonder if that puts him off? I am still very attracted to him as a person and physically. It’s not for a lack of trying on my part. We’ve been married for three years, and we’ve not really had an issue like this before. I know that he loves me, that’s not even a question. I don’t know... I guess I just need advice on how to talk to him about this.