I flushed 3 days before my ultra sound and the doctor told me I don't have any stones and that whatever is going on with me might not be from the stones. But my question to the forum is, is it possible for ultra sound to miss the stones? Because I believe everybody has the stones in different shapes. So let me know where my stone went. Also I don't think that I passed all my stones during my first flush. Anyway, this does not discourage me from flushing. I just did my second flush a week ago, and pass some stones after my faithful ultra sound. But on my second flush I had burning feet which I attributed the epsom salt. I will avoid ES during my next flush. Anybody who has an idea about my mysterious stones not showing up during the ultrasound should reply to me.