Abdominal problem. Me what to do next!

I have abdomen problem from last two month that whenever i ate i start fells vomit and full stomach with little meal My first doc say that its cause of food poisoning bt after that treament i faced same problem and once again visit for better dr another dr do some test like urine and sonography and they said its ur stomach problem bt after eating 10 days of medicine no change in problem then i turned into search of better dr but no one can identify what the problem is Some says fatty liver and some says stomach problem Manu test like blood , urine, and sonography was normal So after that i started taking liv 52 syrup for liver But still problem exist. After meal or lunch my stomach feel full and little pain in upper abdomen So pls suggest me what to do next