I get bad stomach cramps frequently, and about every year or two, I'll get a really bad periodic cramping and multiple eppisodes of diarhea that lasts for about 7 hours, most of the day, then i just have a sensitive stomach for another couple hours until im back to normal. Last time I v* was just about 10 years ago, and throught that 10 year period, i wasnt neurotic about sanitation or health. Just over the last couple years have i developed eating healthier, washing my hands more, and being more careful with what i eat. I also thiink im AB blood type, which apparently gives asymptomatic traits to some noroviruses. I also had some virusafter I had phneaumonia this spring, probably because my immune system was weak, which caused me to feel very nausious periodically, over a period of 2 weeks! but never diarhea or stomach cramps. It made me loose 12 lbs! I would feel fine, then all the sudden I'd get little waves of nausea. Edited by: johnyricer