My heart is crying for your loss because I know it too well. You asked "how do you get through?" and the answer is... one moment at a time because you didn't "lose" anything. He fekkin' died and it's the suckiest of all sucks, especially if you have a healthy relationship with dad. And it's okay to say you're not okay when someone asks how you're doing. It's okay to embrace the hurt but don't get lost in it. And you know what? It's okay to laugh too. Every time I think of the dumbest things I've caught my dad doing, I laugh my ass off (sometimes through the tears). BIG HUGS.
ps - I left you my email address. Here it is again [email protected] don't be shy about using it.