Wow. I don't know if there's a hidden message but it would make a good horror movie.

I've had several dreams that I killed a family member who had done some abusive things. I am not disturbed because I know I'd never do it for real.
I had dreams that I had my dead grandfather's corpse under my bed.

I think it's just our brains entertaining us. Maybe a bit of a tv show or book that inspired it?