HI, yes I get this reaction if I eat gluten by mistake or if I eat high fodmap foods as well.  I become nauseous, vomit then it hits the muscles, my legs sometimes give out.  It takes a while to feel "normal" again.  

The first step would be to re-examine your diet to see if hidden gluten is the cause. Eating out would be the number one source of contamination, even if restaurants offer gluten-free menus and options.

You may want to see al allergist and run a standard food allergy panel to see if wheat allergy could contribute to this, but again, the most likely culprit if you have celiac disease would be gluten contamination.

Any specific tests you would recommend to check for other allergens or issues ? 

Thank you, i have been gluten free for 15 years and my TTG IGA was 16.2 and baseline is 15 according to the lab. The IGA was 415.