Severe stomach pain last 2 days pain get severe if i try and eat anything or sit down ?

Stomach pain : May be gastritis with or without H pylori a bacteria that can complicate gastritis. Have you tried anything like ranitidine or prevacid ( if not allergic) ? May also be gallbladder or eosinophilic esophagitis a allergic response or even pancreatitis. . Avoid alcohol smoking NSAIDS ( motrin like products/ aleve), spicy foods, caffeine and follow up w/doctor/ ER today.