Dreaming he is cheating..🤔🤔🤔

Bare with me here.. I'm 21w pregnant and me and my SO have been together 3yrs.. Recently I have been dreaming he is talking to girls behind my back. Like a few times a week I dream this. Since I got pregnant our sex life is almost nonexistent.

But he is really into sex so I'm wondering why we aren't having sex and he isn't even trying. He never goes out or anything, but he is always on his phone. I have the pass code but a few times he seemed weird when I asked to use his phone when mine was dead.

He is a great guy and I would never think he would cheat on me. But things lately seem off and he chalks it up to stress.... Am I just paranoid and hormonal or should I listen to my dreams and investigate lol