Hi welcome to the health care magic Here your sonography report is normal, hence specific organic cause seems very less likely Simple gastritis or peptic ulcer might be possibility If stress history than rule out functional bowel disease.. For that omeprazole capsule can be prescribed Cooked oatmeal help in soothing stomach Take warm water for drinking Avoid excess spicy foods... Avoid smoking, stress, alcohol, excess tea etc Take green leafy vegetables and fruits more If no improvement and no specific cause found than endoscopy examination needed Take care Consult physician for examination Hope your concern solved