In my three flushes I had stones larger than this being eliminated(some over 3cm). I´d go for a flush without a shadow of a doubt. You´ll be surprised at the results.
That is definitely the best procedure you ca do the reduce inflamation and it works quickly.
Don´t make such a fuss with a flush, after all it is just one day and the OiliveOil + Juice taking lastsonly an hours, but the results are forever.
You´ll also probably be surprised that other large stones that the ultrasound couldnot take will come out.