Hello. I sometimes notice what looks like fine grains of orange sand in the bowl after I urinate....usually coming out at the end of the stream. I recently had urine samples analyzed but nothing was found including infections. I do take a lot if supplement and I also make juice in my Nutribullet on a daily basis. I originally thought they were particles if undigested carrot because of the color. I put a bit of it on my finger and it has the same feel as sand. And finally I do have a history of kidney stones.I d like to think of this as kidney stone attacks that I won t get. What do you think?