You didn't give much information about yourself, but I'll assume you are middle age or younger.
My guess is you were still asleep when you saw and heard dream scenes in your room, i.e., you were dreaming you were awake, or your conscious mind became active in parallel with dreaming - you were Lucid Dreaming. If that is the case you are just one step away from taking conscious control of you dream - look up Lucid Dreaming on the web, in particular I like the work by Stephen LaBarge (not sure of the last name) of Stanford U.
Yeah, but I'm usually under a lot of stress. I hope that's it, though. I don't want to lose my mind.
I was sort of paralyzed because I couldn't move; I could open my eyes, though, and see and hear things from my dream in my room.
I just had the same thing i think. I couldnt get back to sleep i think uts called sleep paralyze or something of the sort. I couldnt move anything i thought iwas dead i couldnt move talk nothing not even open my eyes. Is this what happened to you?
Have you been under a lot of stress lately? That can cause anxiety.