Thank you all for your concern and your wise advice. During the show I drank as much water as possible. Luckily the volume was so loud that I couldn't hear my innards twisting and shouting.
After 3 hours of the show, I felt much better. Being that I am not a very smart person, I joined some coworkers to Ruth Chris Steakhouse. Of course I got several drinks (6 of them) and some read meat (filet mignon), as well as lots of apps, sides, and a creme brulle dessert. I swear to God I must be the dumbest person alive.
I just got back to my room and the farting has picked up, and I might have to pass a stool, but no crazy pains like before. Perhaps I'll have some more news at 4am...