Well first I have to ask if you have been diagnosed with Celiac Disease or a gluten sensitivity? Also, it could depend on the type of alcohol you're drinking. Beer and Malt Liquor (Mike's Hard Lemonade) contain gluten and can give you a bad reaction after consuming them, while wine and liquor tend to be gluten free (but not always) and will cause no reaction. So if you're getting sick after drinking a beer and eating gluten then that is even more gluten than you thought and probably the issue. Otherwise, it might just be the food giving you a bad reaction and the alcohol doing something to your metabolism. However, I'm not a doctor and these are merely opinions/guesses. Gluten sensitivity/Celiac is a weird thing and sometimes you can feel pain but it won't happen until even the next day. I have had issues where I have gone out to eat and consumed a gluten-free beer and food and have gotten extremely dizzy but I can only attribute that to cross contamination in the kitchen. It is bizarre to get sick without consuming gluten so I would just stay away to be careful-including whatever alcohol you're drinking. Sounds like a bummer but I hope this helped somewhat and I really hope you feel better soon!