As if we didn't have enough to worry about. But something that is odd, if I understand you right, is that you developed cavities so quickly. That is, if it is a general problem with acidity, there should have been a more or less uniform degradation of the enamel across the board?? At least that is the way one would expect it to go. Sheeesh!
Despite their names, neither of those are supposed to be particularly acidic. Could it be a manufacturing screwup? What brands were they?
Hey! You're a chemist! Got any litmus paper handy?
-Rick