More new allergies?

I haven't been experimenting with new recipes much this summer, short of baking the same cupcake recipes without guar gum. One of these days I'll write up the coconut yogurt recipe I'm using (gum-free is a struggle!). The goal for this summer was to find a safe multivitamin and hopefully a safe vegetable or two, but we haven't done that yet. Unfortunately it has been one reaction after another and little guy seems some new allergens: celery, cherry and peach. I hope I'm wrong but I'm pulling them for now. Corn has become even more of a problem and he's now even having trouble with citric acid (which is generally corn derived). He reacts to yellow mustard now too, so I don't know if that's the mustard seed or if he's reacting to the source of the vinegar (wheat and/or corn).

The good news is that he is becoming more aware of what food is safe and what isn't. We got him a MedicAlert bracelet in his favorite orange. It usually takes some bribing with Enjoy Life chocolate and he's only wearing it when we go out now, but it's a good first step, right?