It sounds as though you have followed the right procedures for getting to the bottom of your problem. Unfortunately, like many people with similar symptoms, you have not found relief. Recently, emphasis has shifted to the theory that there may be increased sensitivity to the sensations arising in the lower bowel in people with irritable bowel syndrome. Some believe that overgrowth of yeast may cause the symptoms, which can be treated by killing the overgrowth. After that, different people need different dietary modifications.
Some people go overboard and end up with a very unbalanced diet.
We encourage you to read up on the latest information and keep trying modifications to your diet. You might also consult a specialist in alternative therapies. Check the calendar.