Hi. Tuesday afternoon I was not feeling well (slightly nauseous and developing a fever). Wednesday morning I woke up feeling worse, now with a very bad cramp that would intermittently occur in the center of my upper abdomen as if someone was pulling a knot in my stomach. My fever reached 100 later. Thursday I remained very tired and the cramp would come back or my stomach would simply ache. I didn't want to eat either Wednesday or Thursday. Today I have had terrible bloating/gas and aches, my whole abdomen looks/feels swollen, and I have noticed white substance in my stool. Any help please?