How are you with everyday chemicals? A leaky gut is almost assured with your symptoms.
If I were you I would start with the obvious things.
Colon cleansing with
colonics and good dietary habits. Juicing, and whole foods (organic) will get you started. I would also do a
Elimination Diet after a juice fast to see what foods I was very sensitive too. Armed with this information, one can design a food
Rotation Diet that will take down the total load on your system. When you are sensitive to supplements it is best to get your nutrition from food.
juicing is tops for this.
Once you have food and water that you feel better with, then you can expand your circle of influence further. Electro therapies for neutralizing
parasites and organisms is an important consideration to total load. A very important therapy for anyone needing to take the burdon off elimination organs (liver, colon, kidneys) is by utilizing
Far Infrared Sauna therapy. Sweat the toxins out. Then there is oxygen therapies, mineral replacement (bio available), and others as you expand your circle of influence on your personal healing journy.
Then I would consider other factors in my total load. Household chemicals, stress, etc, all contribute to the total health picture.
Knowing one's history can also give clues as to how and why a breakdown in health occurred in the first place.
Also read as much as you possibly can on subjects like acid/alkaline balance, autointoxication, detoxification, cleansing, etc.
Here are a few interesting links on chemical sensitivity(total load):
http://www.tbfamilies.com/food_for_thought.htm
http://allergies.about.com/library/weekly/aa012599.htm
http://www.california.com/~hawk/MCS-Ammunition.htm
http://www.jrussellshealth.com/chemsensintro.html