<s>[INST] Hi I m a 27 year old female. I have a history of chronic UTI, my last one being about a month ago. I went to the hospital bc it had spread to my kidneys. I was on antibiotics for 10 days. My back pain stopped and symptoms improved, although now I ve noticed I have white stuff floating in my urine and I also just noticed white stuff in my stool that kind of looks like tissue paper. I also had blood in my stool a few days ago. I don t know if these two things are connected or not. Any ideas on what this could be? [/INST] From the problems listed in your question you had chronic urinary tract infection for which you were treated with antibiotics for 10 days and the symptoms also subsided. The white stuff (actually crystals) seen in the urine and feces are due to the antibiotic used most probably sulfonamides. This white stuff will disappear upon discontinuance of the said antibiotics. Take a lot of oral fluids to maintain a good urine output to fasten the elimination of this white stuff. Regards! </s>