I keep having a dream, it drives me insane and keeps me afraid of dreaming x.x

It starts off mostly just describing how I get to watch my girlfriend in a most unpleasnt way, it changes every dream...Then it comes back to me, running through a destroyed city burrning the sky is dark and something is following me. I run for the whole dream I never find out what is chasing me but everytime I wake up I'm getting torn peice by peice by whatever has gotten me

I would ask for saving or other forms of advice, but I think its some form of deservince, i feel slightly attracted to it, but i hate every waking moment of it..its like im a freshman again