I've been eating whole wheat waffles for a couple weeks now. I would eat my two waffles and then immediately take my daily vitamin. And then immediately get extremely nauseous. After one bout of vomiting, I decided it must be the daily vitamins because they often bother me without sufficient food in my stomach so I stopped taking them. Although usually two waffles is sufficient. But I really like these waffles, so it was easier to blame the vitamins. Except I'm sitting here, post waffles, feeling quite nauseous.
Years ago I was tested for Celiac Disease and was diagnosed with IBS instead. However, experiences like this make me second guess the diagnosis.
(And before you suggest I return to the GI for additional testing, I am without health insurance, so that ain't happening any time soon.)