Hello dear Understand your concern. It may be due to relapsing jaundice. But for confirmation you have to do laboratory test like bilirubin mostly delta, AST, ALT albumin and total protein, Hepatitis serology (Antigen and antibody), CBC Other cause are below: Gastritis and peptic ulcer disease. Acidity Food poisoning Acid reflux Gastroenteritis Appenicitis gall stone Yes you should restrict the out side food till you get better or diagnosis is confirmed Avoid outside water also. Drink doubled filtered /boiled water Hope this may help you. Best regards Dr. Sagar