A Haunting Dream...Help?

Last night I got only 5 hours of sleep, and had to attend work at 8 in the morning. When I got back home, I decided to take a nap to catch up on some rest. I slept for two hours. During my sleep, I had a very haunting dream. It took place in my bed, right where I was sleeping, and I was in the action, not watching myself. Some spirit kept overtaking my family. First my dad, then sister, then mom. Then the spirit attempted to take over me. But I was so welled up with hatred that the spirit and I became one, and together we created a demon. This demon, I knew, was set out to get revenge for my family. when I awoke, I was thoroughly haunted by this dream, and after looking things up on another site, I learned that the demon symbolizes fear, and that I may have had a visitation from an actual spirit. Can somebody "interpret" my dream? I havent been truely haunted by a dream in a long time.