[url=http://en.wikipedia.org/wiki/Fructose_malabsorption]Fructose intolerance[/url] – this is really valuable to read and think about. The symptoms are very close to what I experience.
A [url=http://en.wikipedia.org/wiki/Hydrogen_breath_test]hydrogen breath test[/url] sounds like it wouldn’t hurt at all to have done. Although even as I write this I wonder if one sign might be bad breath and I’m almost certain I don’t have bad breath.
I have been eating pears and wheat bread. (The mulberries aren’t identified as a problem on wikipedia. I’d also been eating pineapple and they don’t mention it one way or the other.)