What causes vomiting every morning on empty stomach and ingestion after eating? bitter vomiting on empty stomach? feeling better after taking rabeprazole. tested positive for widal test. feeling stomach discomfort at lower abdomen by the left side?

There are various causes of vomiting in the mornings. Since you noted improvement after taking the acid suppressant, Rabeprazole, I narrow the cause in your case to either reflux or gastritis ( inflammation of the stomach lining). Have you been drinking too much coffee,alcohol,taking too much aspirin,ibuprofen? These cause gastritis. If you continue to have symptoms, consult a gastroenterologist