in reply to @geraldine1961 I too have the dilation of the pancreatic duct, as well as my liver duct. I too suffer from the upper right abdomen pain, chronic nausea and diarrhea. I agree that pancreatitis could be causing your symptoms, but would certainly ask your doctor about the duct dilation. Could the antibiotic be causing you more nausea. Taking a probiotic along with it may be helpful to you.
Best of luck