Report of CT told that there is mild hydronephrosis on the right. I had cystoscopy week ago-have felt same pain on my right even after the surgery?

Hydro. Mild hydronephrosis is not unusual. As you had a cystoscopy i presume you did so to check for the cause of the hydronephrosis and I am assuming nothing significant was found. If the studies were all negative then i suspect you will clear and feel well soon. You may have passed a small stone. Continue to hydrate well and follow with your urologist.
What is the question. Need to know what the cystoscopy report states , then will try to figure out what is the best step.