Wow, I'm glad you're okay... There's nothing like that feeling when you think you're about to die or be seriously injured. I've had it a few times, but thank God, I've always ended up okay. Anyway, lucky that you put on the seatbelt just in time.

I wish you a fast recovery from the headache and chest pain... why would it be bruised, from the seatbelt? Or the airbag? If it actually is bruised, by the way, that's not good, you should get it checked out. And usually the next day is worse for pain-- tomorrow you might have neck and back pain as well, those tend to show up later. But hopefully you'll be better soon.