Well, there could be progress on that end too--it used to be that when I had a bad reaction like this I had all the food poisoning symptoms, instead of just the pain part. I kept a food diary for two years without identifying the culprit, but then the products that include forms of wheat and corn myriad and sometimes mysterious. (Most "soy-sauce" contains wheat--and some has no soy at all; most sausage contains corn syrup; etc. etc. etc.)