Screaming or howling

I sat down in my chemistry discussion class, glad that I had not been late. I was kind of tired though, and briefly closed my eyes. As soon as I opened my eyes, I was somewhere else. I was in a room that was dark. I could barely see in front of me. I realized that if I had been awake a moment ago, and I am asleep now, then I must be dreaming. I looked around. I was in a dark, dilapidated room. The floor boards were creaky and covered with dust and debris. The window was boarded up. There was barely enough light for me to see the other end of the room, but I could make out two doors on two adjacent walls. Through one of the doors, people were walking into the room. And through the other door, they were walking out. They seemed not to pay any attention to me. I was dreaming though, so, hey, it did not matter, right? I attempted to change things up but was instantly met with a firm opposition from where I was. It was a really strange feeling, because when I try to alter a scene and fail, I know that the source of failure originates within myself. But, it actually felt like the room where I was ITSELF did not want to change. As if it was totally static. And I got this weird impression that it wanted to keep me there. Intrigued, I began to try to make contact with the people who were randomly passing by. They acted as if I did not exist. I watched where they were coming from, and I watched to where they were going. Each person came from a door that represented different scene, or a different dream. But they all left through the same door, the door that represented reality. I could hear the thoughts of all of these people's dreams. But I could not leave this strange plane that I was stuck in. It almost even seemed as if it was growing darker and darker. I tried to open the door to leave, but it was jammed shut. I tried to teleport, I tried to summon, I tried to trick myself, I even tried to wake myself up - nothing worked. It was VERY strange. I really wanted out of this strange, dark room. I observed other people and how they moved like zombies. I decided that when the time was right, I would run through the door when it was opened by another person. Waiting for the opportune moment to leave, I sprung towards the open door... And woke up back in the previous dream. I was sprawled out across the floor, and people were staring. "Was I sleep walking...?" I asked. A few students nodded while another whispered under her breath, "more like sleep screaming." I looked at the clock, and realized that the class period was finished. I now needed to find my way to lab class, which has always been a challenge for me. I kept walking...And could not find it. The more I walked, the weirder the scenery became and the more lost I was. Obviously, I did have a lucid, but I cannot figure out how to mark it so on the graph.