Welcome to HCM.
Pus cells in urine is normally is 0-1 but if 12-15 cells is definitely worrisome. this suggests urinary tract infection
(UTI). I suggest you get a urine culture and sensitivity and get a prescription for antibiotics from your doctor based on the result. I also suggest to drink lots of water to flush out the infection. Please maintain personal hygiene to avoid reinfection. thanks.