What do different people experience as far as symptoms, etc. when they are glutenized after being GF for a length of time? I have done right around 3 weeks thus far GF, been feeling pretty darn good, but had decided from the start that I would do a gluten challenge. I was planning on doing it right at the end, but we had a family gathering yesterday that wasn't very GF friendly, so I decided I would do the best I could, but if I got glutenized voluntarily or involuntarily, I would take that info. as part of my data in this experiment and seehow I felt, etc. Well, I ate a little dinner roll obviously knowing it contained gluten, but there really weren't other carbs and I didn't feel like having one of my GF snack bars for carbs with dinner... I think other than that, I was completely GF. I had insane GI issues last night, but also had a super bad headache. I am saying the GI issues were gluten related, but I'm not sure what would have caused the crazy bad headache unless that's a commonly experienced effect of consuming gluten after being GF. Any GF-ers have any thoughts about the headache? Maybe should have only had 1 glass of sangria instead of 2? Gluten-induced migraine / headache? Who the heck knows? Thanks!