Nightmare?

This morning kind of scared me. I remember talking to someone in a room and I turn to leave, when I turn around again, there is someone on the ground with a sheet over them. What disturbed me the most was that my dog was next to them with a red line down his chest. Leaving that room I walked to the other side of where I was and there was this blocked off door. On the other side were these people (vampires) trying to get in.