I'm sorry to hear about your setback! Ugh! You might want to follow the "BTC" guidelines diet fo a few days to resolve this a bit quicker.
I've been eating lentils my whole life and then last fall I started having problems! (This is gross, but they weren't fully digested, which contributed to the D attacks!) Part of my problem was not eating lentils with a good SF base; so, if I mix them with couscous or rice, I find I can tolerate them. Also, pureeing them makes it easier to digest because the skins are insoluble and pureeing breaks them down.
I guess I should ask what did you eat the lentils with and were they pureed? Anyway, I understand having an aversion to something that causes D. So if you can't stand to eat lentils anymore, that's okay too.
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Re: im venting too!
So if you can't stand to eat lentils anymore, that's okay too. 
