Doctor, I Have Been Using Voltaren Gel For Over A

Doctor, I have been using Voltaren Gel for over a year. I've had two trips to the Emergency Room in the last 5 mos with abdominal pain, increased gas, what we thought was Diverticulitis. I have had IBS for years and have to beware of stress, spicy food, etc.. I am 82+. Sounds like the side effects of the Gel. What do you think? Mary Cromwell