<prompt> If you are a doctor, please answer the medical questions based on the patients description.On August 14th I went to the ER with a kidney stone , shown by a CT scan . There were the following things also noted from the scan: Nonspecific abdominal varicosities, indeterminate nodules in mesentery , recommend close FU CT. I have had no more pain since the day following the ER visit, so apparently the stone passed. I saw my family doctor yesterday. He said it was my choice to do the follow up scan in 3 months or go to a general surgeon for his opinion now. Last night I had blood tinged urine twice, but have not had it since today. I do have a little lower abdominal discomfort, but no pain. I see my urologist Monday 909 for the results of the x-ray he did on 823. What could be the cause of the blood tinged urine and should I be alarmed?  <response>: HelloThanks for your query. Based on the facts that you have posted it appears that you had pain in abdomen due to kidney stone detected on CT scan Now you have passed blood stained urine Hematuria for two days. Most likely this could be due to small stone in urinary system. Or UTI Please get your routine urine test and urine culture done to find out the organisms causing this infection and antibiotics to which they are sensitive to. Please take broad spectrum antibiotics like Cefuroxime along with urinary antiseptics like Nitrofurantoin twice daily. Get the prescription of medicines from your family Physician. Ensure to Chat Doctor. To keep your urine dilute This will help to control dysuria. If hematuria continues you may need to consult qualified Urologist for clinical evaluation and further management. 