Dreaming about Theatre?

Last night, I had a dream, which of course I can't remember. All I remember is shouting "NO!" I woke myself up from ym dream when I did this because in my dream I realized that I had accidentally said it aloud, but then I went back to just talking in my head. My mom even told me about in the morning because she heard me and thought something was wrong. It made me think of theatre because sometimes the actors may not have lines they're supposed to say aloud, but something comes out anyway. Also, the Trojan Women probably had nightmares in which they shouted no to their situation as well.