wow, im really sorry. Ive only had one person that i knew die in my life, i was extremely close to her... I literally cried for weeks on weeks...

I always feel better when i talk about things, it sucks when your doing it, but it helps a lot afterward. I'm not sure about you, but its something to try. I don't mean just talk about your grandpa, but EVERYTHING. Talk to someone you trust alot, and someone you know can just listen (aka someone who doesn't give advice every ten seconds, that wont make you feel any better.) I hope that if my advice doesn't help, that at least something does. It sucks [insert several words here] when someone dies.