Ouch, sorry to hear that. I know how painful they can be, I break bones all the time. Broke my arm from falling off a playground, broke my toe when I ran into a wall, fractured my spine by killing my bounce on a trampoline, and fractured my ankle when some chick kicked me in the knee. I haven't had any lasting damage though, and neither should you.
One question though, from your x-ray, it looks like your arm's rockin' the U-shape, like where it looks like you have a dent in your arm. Is it?