One night while I was sleeping, I had a very strange dream. I was dreaming about a very annoying guy I used to go to school with. My dream consisted of many flashes of images of me talking to him and being very annoyed like always. At the end of the dream, I was holding a cake at my senior all night party and I was standing in a crowd of people, I was trying to find a place to set this very heavy cake down. When I thought I had finally found a place to set the cake dow,n the very annoying guy was standing in my way.
I shouted to him, telling him to move but he wouldn't, so I continued shouting at him, telling him how fed up I was with him. He had been bugging me all night and I was sick of it. But he just kept on, he told me he couldn't move because he just couldn't and that was that.
Just when I thought I was going to drop the cake all over the floor, a shadow appeared behind me and gave out this shrill harsh scream, it consisted of a series of screams and grunts that I still can't describe very well.
I woke up right then and couldn't move, I tried to move my feet and kick, but I couldn't I tried to turn my head and see what it was but I could hardly breath. I moved my eyes slightly to try and see what it was, but all I saw was a shadow. I couldn't hear my own thoughts or anything beside the screaming, then I began to breath heavily to try and hear my self and after a few seconds, I could move again.
After that, I felt like something was following me, and I couldn't stop thinking about what happened. Things have calmed down a bit since then but it's still not the same as it was.
I agree with redone1867, it might just be sleep paralysis.