Wow, some people here have been through a lot, I feel for ya. Hope you feel better, Sonic Doom.

Worst physical pain:

Having my broken leg set in the hospital. I was given morphine, but I metabolized it before they started setting the leg. Spiral fracture of the tibia and fibula, having my broken leg pulled into position and twisted so it realigned. I didn't know pain like that could exist, I passed out from it 2 or 3 times while they were manipulating my leg. Had three surgeries after that, two titanium rods, 13 screws, and 2 years of rehab, but all is well now and very small scars.