From last couple of years I have had stomach problems. My doctor told me that I am suffering from IIBS. However, lately I have a dull ache under my left rib. I am not sure if this may be or may not be my pancreas or my stomach. I have considered an ulcer because I have the symptoms like upset stomach. So I want to ask from you guys, what causes a dull constant ache under the left rib? And what is the best treatment for this?
