Well, I've never broken anything or suffered any great injuries. But I react to everything in my stomach, so incidentally my worst pain ever was stomach ache caused by stress. It's hard to tell which time was the absolute worst, but sometimes when my bowel went apeshit, quite literally so, I just sat in the bathroom at night, banged my head against the wall (as if it would help), and cried my sorry ass off while trying not to wake up my parents. At it's worst a nice concoction of pain and misery which ends when you finally cry yourself to sleep while sitting on a ceramic bowl full of feces. Yeah, it's happened because the stomach ache only ever comes to me at night.