Hello ! We can not ignore this kind of chronic abdominal pain
which requires medications every four hours. Some history if you consume any alcoholic beverages would have been helpful. However, the site of your pain points more towards pathology in the stomach/duodenum
causing ulceration, which has penetrated and might be causing inflammation of organs in the back like pancreas
. However, even though all these points to an abdominal problem, you should also get your cardiovascular status checked by a cardiologist specially when your blood pressure has gone up. Also you should go for Serum Amylase
and Serum Lipase. The finding of a small kidney stone on the right may be a coincidental. Take care.