Just to put some context. I was maybe 10 at the time and watched the Silent Hill movie for the n'th time in my life until that point. Never had a nightmare from it. Until this.
>Like 5 the most in the morning
>Dream of me and another darker version of me in a room
>Other me has small cube in hand playing with it.
>Suddenly other me has me pinned
>Red fire, blood, or weird shit spews from his mouth.
>Screaming in terror.
>Suddenly wake up in cold sweat.
>Years pass.
>Conjuring movie comes out and I'm 15 now.
>See possession scene where demon possesses woman by pinning her and vomiting red shit in her mouth.
>Immediate flash back of nightmare/dream.
What does this mean? Was it a coincidence caused by me watching a horror movie before bed? Or something worse? I've never had any experiences before.