Woah, the stuff you're describing sounds really tough to me. I only once had an experience similar to this one, though it wasn't nearly as terrifying.
It happened something like 2 years ago. Back then I was kind of sick. (a little fever, the usual stuff) The thing is, I started to make up crazy things in my mind. I remember pretty clearly, being followed by some kind of Killer, the threat in my neck, trying to escape. It went one for quite some time until I awoke.
Lying in bed covered in sweat, I feared the guy was actually in my house. This resulted in me sitting scared next to bed for 5 minutes until I realised it was just a dream.
Pretty hilarious I must say 
Lyrics: He He He He Ha Ha Ha!
