Zuzu......I too was in the travel industry and as such was familiar with food poisoning. I was in a position where appearance matters and was taking Accutane for acne. After several bathroom accidents, I was doing more cleaning than any of the housekeepers. Upon my return I collapsed on my floor and remained there for a week. Being single it took a bit for anyone to notice! When I was able to drag myself to a physician I was checked into the hospital. Ulcerative colitis was the diagnosis. I was given too many prescriptions to count. A specialist advised removal as my case was a stage four. I deferred and have tried everything imaginable. I did find relief with acupuncture.