I am a 78 years old woman. I had Hiatus hernia plus esophagus repair surgery 6 months ago. For 4 months following surgery, I had difficulty swallowing. That gradually subsided, as my surgeon promised. Now, I have developed acute diarrhea and fecal incontinence. Could this be a further result of my surgery? If so, how long should this last. Pepto bismol and immodium do not help. Any other suggestions?