Sometimes if your liver is congested not many stones come out.
you probably have lots of stones which will come out sooner or later.
Having eliminated what you did should already bring a good sensation and in a couple of weeks you can try again.
make sure you watch your diet in between flushes so that you help your liver and gb eliminate more.
Are you taking any biler mover: Chinese Bitters, or aritichoke tincture. these are great medicines for this sort of treatment.
Good luck and I honestly think you did well for the first flush. Congratulations!