<s>[INST] I went to the ER 5 days ago because I was not urinating and has severe sweeping of feet and ankles. I have a catather in. Kidney fiction was tested and is normal. No infections. I m waiting to see a urologist but I have white cotton like substance soming out of the cathetet and small blood clots that look like worm? They did find crysals in my urine and a very small kidney stones but nothing blocking my blatter. Any sort of explaintion of any of this would help. [/INST] HelloThanks for query. You have not mentioned your age in your query. You had to rush to ER for acute retention of urine and was catheterized to empty the bladder. The cause of retention of urine may be either due bladder outlet obstruction due to enlarged prostate which is common in elderly people. The white fleck and blood clots that are seen in tube are due to two factors 1) Inflammation of bladder mucosa (Catheter Cystitis) due to foreign body reaction of bladder mucosa .2) Infection secondary to obstructed urine out flow. Urologist will carry out following basic test to confirm the cause of retention 1) Ultrasound Scanning of abdomen and pelvis 2) Urine culture that will help to take appropriate antibiotic to control infection. Further treatment will depend upon result of these tests and final diagnosis. Chat Doctor.  </s>