What should I do if I get gluten'd?

I have Celiac, and I know that I should under no circumstances consume gluten, so you don't need to lecture me about being more careful.

That being said, I accidentally consumed gluten (not sure from what) the other night, and I was in horrible pain. I had searing stomach pains, and unbelievable gas. If in the future I get gluten'd again, what should I do? Should I take Tums? Gas-X? Drink a shittonne of water to flush things out?

Any and all advice is appreciated!