Sometimes people DON'T get stones on their first flush. They are plugged up and the stones don't come out. On my first flush I got just chafe, but I figured I was probably getting rid of toxins, old Antibiotic residues (from childhood) and pharmaceutical residues, etc. so I decided it was ok. I did my second flush a week later and got lots of stones!! Apparently I had to get the gunk (though some of it was not real noticeable to the naked eye) out of my bile ducts in order for the bigger stuff (stones of any size) to be able to move out. Don't get discouraged. Wait a couple of weeks and try again. Be sure and eat a smaller lunch this time or you may run the risk of feeling nauseated during the night.