Sorry you are having those scary dreams. I have never had a carnival dream but I often have nightmares about being lost with no way to get out. Sometimes I dream that I can't remember where I parked my car and I wander and wander around. Sometimes in the dream I even forget what kind of car I have. Sadly I really don't know anything about dream interpretation. In my case, I think my nightmares are connected to my fear to getting Alzheimer's disease. So sorry I cannot be helpful to you.