It's safe to do a daily coffee enema for at least a week, at the same time a rounded tablespoon of Lecithin twice a day, and Epsom Salt Flushes to help dilate the ducts you will probably get out more stones. Maybe a swig or two of Oil during this time will help the stones slide out easier. It worked for me.
I did hear somewhere that taking Lecithin daily anyway helps not to produce additional stones.