GI related upper back pain?

I am a 25 yr. old female who has had many GI related problems. I had my gallbladder removed 2 yrs ago, have post cholesectomy problems (constant bowel movements, pain in upper right quadrant). I have had constant lower abdominal pain for some time, and am living with it. Recently, I have had almost constant nausea,  chest and upper back pain, on both sides, focused on my rib cage and moving up to the shoulder blades. I have had both endo and colonoscopy, both normal, was deemed negative for H.Pylori, misdiagnosed with Celiac (pathology was incorrectly interpreted first time), had a CAT scan that was normal, and currently take Zantac, Bentyl, and oral contraceptive.

I am wondering if my pain is heart related, or if I should worry about pancreatitis, liver, or spleen issues? Is is possible this is all related to IBS? I have not been diagnosed as of yet, but this is new pain, and I don't know if it is all related or not. Based upon the tests I have already had, what course of action should I request or anticipate when I see my physician?

[sg325]

I am also taking Questran daily.