Hi ! Good evening. I am Dr Shareef answering your query. If I were your doctor, I would advise you for some blood tests like a CBC, LFT, serum amylase and lipase, a urine routine/microscopic/culture and sensitivity test and a stool test for ova and cyst. I would treat any one of these if positive, and also advise you not to eat from outside if you do to prevent any intestinal infections creeping in and also to prevent any kind of sensitivity reaction of your intestinal mucosa to some components of fast and fried food. Management would depend on a physical examination and reports of investigations. Till then, you could go for some anti spasmodic drug, and add sufficient roughage and liquids to your diet. I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing health care magic to clear doubts on your health problems. I wish you an early recovery. Dr Shareef.