yeah, that might be it, too. It's a tough flush if people are not real tolerant of fats and oils. My boyfriend did his first (and possibly last) flush a few weeks ago, and he enjoyed the olive oil, didn't bother him a bit. Didn't get stones out, either, but he routinely will eat 2 avocadoes at once or dump 1/4 cup or more of OO on toast in the morning. He's a mystery - eats pretty much whatever he wants, but has has perfect PH and is really healthy. I think it's all psycho-spiritual with him. He meditates every day, among other things.