I too have gotten gastroenteritis from Wendy's, the last four times there. After the first two times I was suspicious, and third and fourth times was enough proof for me. I am getting older and have switched to the Jr. Burger for a smaller meal, and guess what? The Jr Bun ingredients are different than the larger bun, notably it contains Annatto , a natural food coloring known for causing headaches, nausea, vomiting, asthma attack and gastroenteritis and even anaphylactic shock. Most people with allergies to artificial food colorings also react to Annatto. Jr Bun also contains tumeric which causes similar reactions in some people. Let Wendy's know.