Hello thank you for trusting HCM Dear many causes for bloting and decreased appetite.Some common causes of abdominal bloating and loss of appetite include: constipation,gastroenteritis, both viral and bacterial,giardiasis,gallstones,food poisoning peripheral neuropathy,hookworm infections peritonitis,ectopic pregnancy,congestive heart failure (CHF),anorexia nervosa,irritable bowel syndrome (IBS),gastroesophageal reflux disease (GERD),food intolerances, such as lactose or gluten intolerance,gastrointestinal blockages gastroparesis, a condition in which your stomach muscles don’t work properly,pregnancy, especially in your first trimester,taking certain medications, such as antibiotics or chemotherapy drugs,Crohn’s disease,E. coli infection etc.. please get examination for Hemoglobin,sugar levels,stool for occult blood, USG abdomen etc.. please consult your doctor he will examine and treat you accordingly. Take care.