I've been passing stones since day 11 of MC

I haven't consumed any olive oil at all. Have only been fasting. Had I been doing the flush, I would have had the exact same question, but now that I've seen the same type of balls you describe (mine are green, and some are yellow/green/tan...the size of peas to the size of a dime), I know that these are stones. Don't forget that hepatic/gall stones are almost entirely cholesterol, with some bile, calcium and something else I don't remember. They're soft, so they don't look like the rocks we would normally envision.

I've passed about 20-30 over the last week.

Amazing, huh?