Hi! Good evening. I am Dr Shareef answering your query. From the history, it seems that you had a intestinal infection resulting in pain abdomen, diarrhea, and the sick sensation naturally with loss of appetite. If I were your doctor, I would advise you not to eat from outside as infections might creep into your intestines due to food cooked unhygienically, go for a stool test for ova/cyst and if need be a culture sensitivity, and treat the infection if positive. Till then, I would advise you for a proton pump inhibitor, an anti emetic, and a probiotic. For the pain if severe, I would advise you with an anti spasmodic drug for a symptomatic relief. At the same time I would ensure your enough fluid intake to avoid any dehydration. 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.