Hello, Thank you for choosing HealthcareMagic for your query, The infection you are suffering from is called Gastroenteritis or stomach flu.In gastroenteritis the mucosa of the intestine is severely inflamed causing symptoms like loose stools,indigestion,Bloating,Belching,Stoamch cramps and vomiting.However some patients mmay have only few symptoms, Tests suggested- Ultrasound abdomen to rule out inflammation of abdomen. Stool test for bacterial or protozoal infection Fecal calproctin to rule out intestinal inflammation. Most likely stomach flu is viral and is self limiting.However antibiotic therapy can be given in case its bacterial or protozoal. Treatment suggested- Start taking Fybrogel or metamucil. It increases bulk of stool and improves digestion. Start taking a good over counter probiotic daily.It will gradually improve digestion.They are rich in good bacteria which assists digestion. Take lots of banana,Apple and peaches. Drink lots of fibrous juices. Take light and easily digestible food. Antibiotic therapy could be given as per the reports of investigation. Imodium 4 mg stat dose can be taken to stop loose stools. Dicyclomine can be taken fir spasmodic pains along with Nexium 40mg.