You definately need some professional, if possible, in person assistance from a variety of practitioners. However, not knowing where you live and what your financial situation is precludes recommendations.
In terms of the diet, please let me clear up a few misconceptions:
There is no requirement to eat something. A good key for you to start would be to start avoiding the things, this case, the things that are on the O diet, such as wheat and corn, and slowly move forward that way. You have alot of serious illnesses (I am also living with a serious autoimmune illness), and it is important not to change to quickly, or to stop taking medications. Go slow, be patient with yourself. Your body will heal, but it will take time.
Please look for other posts from myself and others on this board, wherein we have talked about other general diet and emotional/spiritual matters. And please let us know how you are doing. You will find that this is a very supportive and active 'cyber' community.