why am I having violent dreams about my boyfriend?

My toddler son and I moved in with my boyfriend about two weeks ago. The last week I've been having some pretty violent dreams where my boyfriends hurts me and my so . in one he might choke me to death in front of my son leaving my child begging for his mommy, or in the next he might shoot us both or slit our throats in our sleep.

Outside of these dreams my boyfriend starting taking ambien a few weeks ago, he's been waking me up in the middle of the night to ask random questions, like "why is there a shoe holder on the door" or "did you lock the door?", but doesn't remember doing it. He's also admitted to waking up and like, comatose sleep binge-eating, which he does remember.

He's also been acting super suspicious of me. When I walked into the apartment last night I was hanging up the phone with my mom and told her I loved you. He walked into the room with this very dark look and his face, like I just hung up with a lover and asked who it was, when I said my mom he acted like he didn't believe me.

Keep in mind he has NEVER acted like this until just the last week. My son and I have spent ample time with him, including over nighters.