I'm taking the same thing for my liver. :) Planetary Formula's is great, as are GCG and Coptis.
It sounds like you've done everything great - so my only question is have you been doing any kind of bowel management after each flush? You've done 22, which means you've released a lot of toxins, but if you didn't follow them with colonics and/or P&B shakes, then a stone could get stuck in the intestines, and the bile and toxins could get recirculated right back to the liver.
Whenever there's pain I say flush, but this time I say don't flush until you can do proper bowel management before and after the flush. :)