Sleep paralysis , yeah, it sucks.
Actually, i knew what it was, doesnt make it any less freaky to me, IMO.
Often , beacuse it occurs with significant lucid dreams/nightmares, in my experience.
In other words, wide awake, i know im
dreaming, but i cant stop the nightmare/control the dream, OR move or get up .
That is, as if being fully conscious and not being able to move, isnt bad enough.
Fortunately, doesnt happen so much now-but it used to be the case, id know which nightmare i was likely to have, days, sometimes weeks in a row, because certain "sets" of nightmares always occured in sequence, and id seen them so often-like a bad movie guide.
I guess that's why i cant stand horror movies.
Edit-Used to happen of couple times a week (sleep paralysis), various nightmare sequence's would run from a couple of days, to a week, depending on the sequence.
Re, feeling held down, ive had that too-i differentiate that from standard paralysis, because normally i just cant move; on this single occasion, i also had the very real sensation of being crushed, and couldnt move because of the "weight", and actually being "scared stiff" i suppose, like one of those fainting goat's or something.
I still strongly suspect a ghost/poltergeist/paranormal thing, but in reality it was probably just a variety of paralysis.