those tests are meaningless. they do not pickup on reactions that are of the intracellular, kinin mediated type. to put it frankly most doctors don't have a CLUE.
it is extremely frustrating for a person in your position. save your money on allergy proofing your house. spend it on more effective treatments.
i believe your intuition lets you know that the antibiotics caused some serious problems. when i started on the diflucan there was a lot of vomiting and diarhea. it wasn't pleasant but i stuck with it. it was 2 weeks of pure hell. it finally ended about 1 week ago.
in your opinion why is the probiotic causing nausea? does it contain dairy? what brand are you using?
you need to learn all you can about the individual amino acids. some like cysteine are truly remarkable and very likely will dramatically improve your allergy threshold. a doctor will never tell you this information. but most important you have to try and get some homemade yogurt into your system. i like GOAT milk because it is less allergenic -- it has only minute amounts of casein. the acidophilus from the fresh culture should also give your body a huge boost in immunity.
i remember when i could not even step outside the house because the smell of perfume made me sick. God, that was horrible.
once again do some research into cysteine -- one doctor stated that every single person who suffers from chronic illness should supplement this amino acid. it helped me. however, it is somewhat expensive. i pay $15.50 for 60 500mg capsules. (but i keep buying it)