I don't know if this is seen as Sleeping paralysis, but ill post it anyway.

This one night, I was trying to sleep, and I felt a presence in my room, the fear grew steadily and before i knew it i was lying on my back shaking like crazy. You must know im not a religous person, but at that moment i was screaming (in my head) : Please Jezus save me!! And the shaking and extreme fear kept going for.. I dont know how long, it could have been 1 minute, but also 1 hour. Then it slowly stopped, and in the end i fell asleep.

The night after that i had the same, but very short; a couple of seconds nothing more.

Sometimes i have the same feeling as before, but the fear goes away very quickly. Like if you were immune to a dissease. .... Also sometimes (very very rarely) I have these 'schocks' inside my head, yeah it sounds really weird, but i cant describe it better. This happens during the day. Ive researched it, but I cant find a good answer why this is happening.

I just read a thread on the 3:00-3:45am phenomenon and it seems to be very common. 3:00 Am is significant in the occult if I'm not wrong.

I'll throw a wacky theory out there:
What if some entities were/are trying to use us as vessels? Aliens/Demons etc. Now that's creepy....Just watched the movie Insidious lol made me think for 5 minutes or so.

I only experienced this once and it scared the yuck out of me. In the middle of the afternoon, I fell asleep on the sofa... a nice little afternoon nap. I can't recall what happened but something startled me to open my eyes. I couldn't move, I couldn't speak. My mind was racing and all I could do was look up. I remember being so tired that I could barely keep my eyes open. Remembering I read that this happens to people from time to time, I just closed my eyes and went back to sleep. When I woke up, everything was fine.

It was the weirdest thing...almost like when I was startled, it was so sudden that my mind woke up and wasn't prepared to wake up my body at the same time.