Welcome to HCM.
It could be OVERACTIVE BLADDER
or related to the long term complications of TURP.
Tests needed are urine routine, culture, blood for glucose
scan to look for residual urine/ stone.
The treatment is for the cause.
If no cause is found, overactive bladder is diagnosed and need treatment for 3 to 6 months.
This is curable and there should be no worry.