What causes a dull constant ache under the left rib?

by Symptom Advice on June 19, 2011

I have had stomach problems for the last couple of years. my doctor's tell me I IBS. However, lately I have had a dull ache under my left rib. I am not sure if this may be my pancreas or my stomach. I have considered an ulcer because I have symptoms like upset stomach. Has anyone else had this problem?

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