Hello Kickit,
I also suffer from this, sleep paralisis, I have had it for years, sometime more frequently, then nothing maybe for a while.
Seems to happen more often when I am troubled, whether I am conciously dealing with what is on my mind or not.
I have read some interesting articles on this recently suggesting that it is spirits, I do believe that I am sensitive to these kinds of things.
When this happens now I try to look at what is going on in my life and pray for willingness to see what I need to and not be afraid.
Love, Rose