I just got back from a competition in st Croix (US virgin island). I went over 2 months without even a slight stomach ache but got a bad stomach ache and IBS the first night there after eating the gluten free pasta dish they served. The water is also suspect so I don't know if I got some bacteria from the water or if I just got glutened. The race (half ironman) did not go well since my gut was not working well- I had to pull out of the race a few miles from the finish.
They were serving water filled from tap water at the aid stations and I was told to not drink the tap water (at the hotel).
How can you tell the difference between montezumas revenge and glutening?
To be honest it seems like I got glutened- I had the other symptoms too- brain fog, no energy, IBS etc