How concerned should I be about recent oily, foul diarrhea with cramps and flatulence? I’m 47, F, Obese, Hx fatty liver, IBS, non-diabetic. One week copious gas and very foul smelling floating diarrhea, approx. 5x/day. No fever or recent illnesses. Only dietary change was that a neighbor gave me a few pounds of organic pecans (my favorite) and I ate a lot of them for a few days in a row. Nuts often cause my IBS to act up but this is different. Very unpleasant.