human stomach sad character. gastritis, indigestion and stomach pain problems. flat cartoon

abdomen abdominal ache acid belly bloating cancer cartoon character circle concept digestive disease esophageal esophagus face flat gastric gastritis gastroenterology gerd health heartburn human illustration indigestion inflamed inflammation inflammatory irritation isolated kawaii man medical pain pancreas point problem radial red reflux round sign stomach stomachache style symbol symptomatic ulcer vector