Medical professionals are used to dealing with people who have medical problems. Let them know going in that you have incontinence problems, then let them deal with the situation. You are the patient. They are supposed to take care of you. (I told an MRI technician that I was wearing protection against urinary incontinence when he told me to remove "everything." His response was: "That's ok." I removed "everything." PS: The MRI showed no abnormalities.)