I just remembered another dream I had last night! I was in my bedroom in the last house I lived in with my parents. I was in bed, and I saw mice running across the floor. I screamed, but it was that weird, muted, dream-scream, where you're trying to scream loudly and it comes out as sort of a stifled groan. I got out of bed and walked around until I realized that it was still the middle of the night (I saw a clock, but I don't remember the time) and that I should go back to bed. I think at that point my parents were up, and I asked my mom if they had heard me scream, and she said they had but figured I was just dreaming. Then I wondered if I had just dreamed about the mice.
I'm still not sure.