First things first, I know about sleep paralysis and night terrors. What I experienced was neither of these. I had moved in with my mom and her boyfriend into a very old farm house. I had noticed shortly after moving in that I could hear voices, male voices mainly about the same time every night. At first I attributed these to my Mom or her boyfriend leaving on a TV or radio, but after speaking with them and doing some investigation on my own, one night I determined that I was wrong.
Then I started waking up in the middle of the night, not being able to move or speak. This went on for a few months off and on, but it began to happen more frequently as time went by. I was often able to move after saying the Lords prayer or one of the psalms, now I am not a deeply religous person but I believed this helped me. Things really got bad near the end, I was waking up in this conditon almost every night. One night, as it was happening, my mother walked into the room, I saw and heard her walk in, but I could do nothing until I said the prayer, she said that she could hear me saying something but couldn't make out what it was and that the closer she got to me the colder the air felt. I told her what was going on and she said she had experienced the same thing a few times since moving in there.
Well the next night I awoke to the same thing happening, I was asleep on my side and I felt someone put their hand on my shoulder which immediately woke me up, once again I was unable to move or to speak, like what ever it was didn't want me to see it. I willed myself to roll over and confront what ever it was holding me down and to my surprise, in front of my face was the face of an old woman, no body, nothing, just her face and she screamed at me: "what do I do now". Well being as mad as I was I told her to leave me the (blank) alone and go into the light. When I did this she gave me a puzzled look and disappeared.
After that I never had another incident. I did some investigating of the home and wasn't able to find out if anyone had died there or not. Now that I think back on it I guess I could have been a little more polite to this spirit, but hey after several months of interrupted sleep who can blame me.