What's the most pain you've ever experienced? (physical pain)

Destroying myself while working tech for a musical. I had a terrible stomach ache, the runs, whenever I'd exhale I'd smell terrible stomach acid, and also I got like a dozen bruises on my leg. I'd even ignore the pain to tend to needs of other sick cast and crew. It probably was the only time I cried in public within these past 10 years due to the pain I was under.