Hi. Thanks for your query and an elucidate history. You have got a pain in the upper left abdomen and can be due to many other factors too as follows:: - Stomach ulcer has already been diagnosed and you are already treatment with Lansoprazole , but not helping. -Left colon inflammation, -spleen enlargement -Tail of Pancreas having inflammation or tumor. -Left kidney fullness or stone I would advise the following: -CT scan of the abdomen -Colonoscopy -Physical examination and clinical evaluation bya Gastroenterologist , preferably a Surgical one. Once the proper diagnosis is done treatment will be fruitful: Continue Lansoprazole Add Ranitidine Domperidone antacid gel 3 hourly Soft bland diet Treatment of the stress and anxiety In this way your proper diagnosis and treatment with cure is possible.