Why does whole grain spaghetti make me feel ill if regular spaghetti doesn't?

I ate whole grain spaghetti 4 dinner and I feel a bit ill, not sick to my stomach like if I'm gonna throw up, just a bit ill, why does eating whole grain spaghetti do that to me if regular doesn't? Anyone else have any similar problems with certain foods?
Why does whole grain spaghetti make me feel ill if regular spaghetti doesn't?
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