I have been gluten-free since Sept. 2011 and on the 4th of July 2012 I cheated for the first time and ate some homemade cake I made for a potluck. (Not gluten-free cake.) I am soooooo regreting this! 3 days after the cake I came down with masssive back/neck pain, extreme migraine, belly bloat, blurred vision, and weakness/tiredness. It's been almost ...