has anyone started passing stones just from Gold Coin Grass tincture?

I started prepping for my 4th Liver Flush (scheduled for first Saturday in April) by taking the Gold Coin grass tincture and drinking my kidney tea. I've been taking the GCG for three or four days now. This morning I noticed about twenty small tan stones floating in the toilet along with a normal bowel movement.
I flushed my intestines with Oxypowder for several days (until no more stones were visible)after my last Liver Flush in February.
There have been no stones visible with my BMs after the last flush prior to today. Has anyone else experienced this? Is it possible that the GCG is triggering a spontaneous release of smaller stones?