i am a 55 female and have had four back surgerires including two disc fusions in my lower back. i have had severe pain on right side for about six weeks my right kidney area goes from cant touch my back to moderate, went to family doctor after ct said i had two small stones and see a specialist the end of the month the last two weeks and almost everyday i am passing black flakes that float and bigger black things that sink slight fever off and on usually just a day at atime, think i am better for a few days only to feel worse again, what are the black flecks and can stones form that fast and should i move my appt up or am i over reacting