Don't trust bf after cheating dreams

My boyfriend and I have had a lot of trust issues in the past. He's never cheated but done things he knows he is not suppose to. Lately I've been having the same recurring dream over and over. I dream he's having a baby with his baby mother and I accidentally walk into a room and see them. Today he told me he dreamt he got back with her.

Ever since I've had those dreams I've been very distrustful. Things were perfect between us until those dreams. I feel it's my subconscious or gut trying to tell me something I am not seeing.

Am I overreacting? Should I trust my gut/dreams that something is not right? I've been very distant with his since then and he doesn't understand why. To him "they are just dreams"