What those guys said!
I'm approaching the 3-week mark. I wouldn't have made it this long without this site. I've tried to quit before, but it was always spontaneous, no game plan in place. Read everything on this site and educate yourself about what you're going through now, what you're going to go through next week, and understand why you're going through this or that. Knowing what to expect will help you fight this shit.
It sucks ass at times, but it does get better and you'll notice things getting better from the healing you'll notice in your mouth to the better moods you'll find yourself in each morning after you start getting real nights of sleep.
I'm in it with you too, so I'm going through the same thing. Youre defnitely not alone.
Indy