I hope you get a lot of replies as I am curious too.
I did a parasite cleanse after my first liver flush. Every Thursday (weird eh) for the 3 weeks I would wake up dreadfully tired and nauseaus with pain in the gallbladder area.
I would drink some of the awful Epsom Salts and an hour or so later out would come both stones and parasites.
Once I did a coffee enema and some slimy yellow and red things came out. Quite disconcerting. I really hate enemas but will try again one of these days.
My current theory is that the Wormwood etc. kills some but not all but it weakens them and makes them move from the liver to the gallbladder/bowels where they can be more easily expelled. I your gallbladder is full of parasites then stones cannot be moved into this area until it empties out
Being a bit parasite-paranoid these days I did another parasite cleanse using Parastroy 3 months later followed by a liver flush. Did not spot any parasites that time and had very few stones (little green ones gunked together by yellow stuff which I think is cholestrol)
My next flush which I started in the AM was very successful and not nearly as debilitating as the first 3 so I think both of the parasite cleanses helped my liver immensely.
IMHO you are definitely on the right track and will get many more stones out the next time.