Any pain you have is probably a stone getting stuck... taking a teaspoon of Epsom Salts in some water should take care of it at almost every stage of the flush and afterwards...
I did my 9th flush last night and today and I played fast and kind of loose with the timing... and it worked just fine. I passed a few small stones earlier this afternoon, a bunch of chaff and just drank my second and last dose of OO (Olive-Oil) and grapefruit juice.
The ES opens the bile ducts and flushes the digestive tract to clear it of both stones and anything that might hang the stones up... The Gapefruit juice and olive oil are to stimulate the bile to flow and the gall bladder to contract... which actually moves the stones.
The body is an organic machine.. although it's inner mechanisms are incredibly precise, what you eat drink and do had a lot more wiggle room to still get the results you want.
Bottom line is that this is your responsibility... read, read, read and then think about it and consider how your body reacts to things and then flush the way you can trust.
Best Always,
LN