Welcome to HCM
In your case you have undergone a procedure foe kidney
stone removal , as there is a stent
is placed in ureter
You have fever which may be because of UTI (Urinary Tract Infection
) ,parcatamol is for reducing temparature but you need to know the cause of fever .
Kindly visit Uro surgeon and get your CBC and Urine routine and a culture and sensitivity test and take appropriate antibiotic in consultation with doctor,once infection is cleared you will be alright.
You may also require a Renal Ultrasound
to see every thing is fine and no obstruction is there?
Good luck to you