Worst. Dream. EVER. Nightmare style.

Just had the worst dream ever last night. My gram died (she isn't with us anymore), and then my uncle and my MOM who are both alive died in my dream. (My uncle drowned but then he was alive again and my mom and him got bit by something or got some kind of rash that slowly killed them and we all knew it was a matter of hours) WTF? I woke up and just about burst into tears. I made AJ snuggle me to try and make the scared go away but I'm still freaked out. Someone explain to me what in the world this dream means!