Hello.. I understand your concern please. You said you had an operation done on your right kidney for ureteric stone. Its an important history. Can you please tell me why did you feel the need to get your urine tested? Pain in the back (loin) guides me to think that it could be a kidney stone. Does the pain go anywhere else or it just remains at the back itself? Like whether it goes upto the testicle or inner side of your left thigh or something like that? I guess based on the fact that there are numerous rbcs, the colour of urine might be red. PLz let me know if you have fever now or had any sorethroat in the recent times last week or like that. First get the basic investigation done which is Ultrasound abdomen and pelvis which could be a screening test for many kidney related conditions and also a X ray KUB to know if there are any stones. Based on the reports we could further proceed. For time being, to relieve the pain do take Tab Diclofenac and stay hydrated by drinking lots of water ( 4 litres / day ) as it may help flushing out small stones if any. Follow up after the suggested investigations are done. Thank you