The silent Warning in the night

"I was standing in a room with a few people, and something felt wrong. I wanted to warn them about something, but when I opened my mouth, no sound came out. I tried again, harder this time, but my voice was completely gone. Nobody seemed to notice. One person was talking to me like everything was normal, and I kept pointing toward the door. I knew I needed to say something, but I couldn't even whisper. Then suddenly I was outside on a street at night. I saw someone walking toward me and felt like I knew him, but I couldn't remember who he was. I tried shouting for help, but my throat felt closed. I woke up for a moment inside the dream and thought I was safe. Then I realized I still couldn't speak. When I finally woke up for real, I immediately said the first words that came to my mind just to make sure my voice worked."