What does this dream mean?

What does this dream mean?:

I apparently died for some reason or another, and I came back as a ghost. A few people knew I was there, including my grandmother on my fathers side and my step-uncle on my fathers side. My mom didn't know I was there and my dad didn't show up at all. My granma knew I was there but she couldn't see or hear me, so I wrote on paper but I tried to hide the paper in my hand when I went to see her so no one would see a pen and paper floating in the air.=) Then I woke up.

I was kinda freaked out by it. I even wrote'If I die don't change my room.' in one of my books that I knew if they were moving my stuff my mom would see. Later that day I saw my granma and about 40 minutes ago I accidentally stumbled on a website that was showcasing Nikki Catsouras crash photos. It freaked me out even more. I'm not sure if it means anything but it was weird...

Dreams let the mind express things that would normally be suppressed in the waking world. You might of been anticipating how future events might lay out. Dreams may also regulate mood. In your mind you think about more than you actually might believe you do. The saying that states you dream about the last thought you think is actually true, the only perk being that you dont always remember your last thought. Maybe something you read or saw on television related to the circumstances in your dream. Maybe you heard or saw this on the radio or television without actually paying attention to it and you dreamed about it.

umm try this website I think its pretty good! http://www.dreammoods.com/dreamdictionary/

Thanks