"I'm glad I heard, but it's nervewracking. I'm constantly listening, even on a subconscious level, and interpreting any sounds because Tom can't call out for help."

Been there and I agree. I slept many nights beside a couch in case this person fell off it so they would fall on me and not on the floor. You get to the point where irregular breathing wakes you up. Nervewracking is putting it mildly. I hope the situation improves soon for both of you.