My husband who is hardly every sick, came down with the stomach cramps, no desire to eat, loose stools, no vomiting, farts smell like someone died inside, has indigestion, urky feeling, cant burp. Has drank 7-up, Gatorade, minimal eating, mostly soup, broth, toast. No fever. My husband has hypertension and takes lysinpril. Should I worry, or is it the intestinal flu??