I think I may have responded to another post of yours complaining about these symptoms, and I responded that it sounded like it could be gluten. It can be hard to tell the difference, since so many standard American diet-type foods mix bread and cheese, say. There really is no way to be sure other than taking them out of your diet for several weeks, one at a time. Something like 50% of the population have some kind of gluten sensitivity/intolerance deal, on top of those with celiac conditions. So it's not an unusual thing at all. That said, if you are lactose-intolerant, I think you are better off learning to live without the stuff that messes you up rather than jumping through hoops so you won't mess yourself up quite so much when you eat it.
