Welcome to my nightmare

My most memorable nightmare was stirred from watching the movie "Paranormal Activity". I've read before that most dreams deal with real aspects of our daily life. My dream started with me feeling as if i was actually awake and for the life of me i could not get up off my bed or cry for help. I felt a sudden anxiety from not being able to get off my bed and i tried to rouse myself up but nothing would work. I began to hear a deep, scary laugh that only gave me more panic. My hands were free to move and for some reason one dangled off my bed only to be a sudden touch from underneath my bed. I did not want to look and i did not want to look up. I closed my eyes during the dream hoping everything would pass over if i was to either wake up. The last and final scare was when i felt my bed begin to rise and move upwards while the deep laugh was lingering in a distance. i was frightened and worried if everything i was experiencing was not a dream and real life. I was scared. By chance i quickly fell to the floor and opened my eyes after several minutes. Interesting i woke up from the dream got a cup of water turned on a couple of lights to check if anything was misplaced and giving evidence to my experience but nothing was found and i went to bed never experiencing such a thing again.