My Son Age 35 Was Diagnosed And Treated For H

My son age 35 was diagnosed and treated for H pyloreic, had an endoscope showing only gastritis etc.this was all done in Nov. of last year--still complaing of stomach problems, 2 weeks ago had to have his gallbladder out due to it quit working found out it was gangrene, and he is still sick with stomach pain do not know what to do--his Dr. says give it time, well he has and is still sick, do you have any suggestions