When i was having gb problems i called Mrs Chang from Sensible Health and asked her if I could do flushes more frequently. She simply answered you can do every day if you wish. however it may be a waste as stones might not come out, but no damage happens with liver flushes.
i did some flushes within a week period and nothing bad ever happened. lately I´ve been flushing every two months as this period seems to be enough and i don´t have any problems any more.
You may have something else, but i guess your stomach discomfort could be caused by something else and have no connecetion with liver flushes. At least this my own experience.