Infоrmаtiоn: Yоu аre seeing а 75 year old patient with arthritis in clinic today, with new onset stomach pain. She has nausea and vomiting, and an elevated temperature. She is on Celebrex (NSAID) for the arthritis pain, and has been self treating the nausea with ginger ale. Use this information to answer the next 3 questions. Your initial assessment of the symptoms and data lead you to think she is experiencing which GI disorder?