I'm certain I have no problem with dairy because I don't get bloated at all until I eat wheat, although some fruit also causes problems if I eat too much of it: figs, seedy berries and apple in particular but even small amounts of wheat seem to cause problems. If I just eat my porridge, cheese, chicken, nuts, potatoes etc. all day I never seem to have any problems.
I completely agree with you, I don't have a very balanced diet at the moment but it's only temporary and the porridge is fortified with my RDA of all essential vitamins/minerals and contains 69g of protein, 55.8g of it being from milk which has a good biological availability.
Unfortunately I'm mostly doing this on my own - the NHS aren't any good these days. I do have at least one real meal a day but it can't be very big because my stomach can't stand it. Today I had a small amount of cottage pie for lunch and will have a sausage and jacket potato for dinner.
I'm contemplating seeing a nutritionist on a private basis. I want to quit the porridge (making it is a pain) but don't want to try to change my weird eating habits too quickly or without guidance from a professional, as it could trigger a relapse. So far it seems to be working, my health has improved a lot: I'm no longer anaemic, constipated or have bad joints and I have loads more energy.
I agree, a food intolerance test is a good idea and I'll go private if needs be.
Maybe I'm hoping for too much too soon - it's only 3 weeks into my recovery.