Welcome to HCM.
As you had safe sex
the chances of getting HIV
is very very remote unless there is a leak in your condom. So nothing to worry.
Presence of 2-3 pus cells and 10 epithelial cells
are not indicating any active infection. Presence of pus cells more than 5 only, one has to bother. If you have not taken adequate liquid, then also similar problem will occur and not related to your sexual activity. If you start consume a quantity of around 3 liters of water daily, then you will be alright.
Culture and sensitivity of urine and HIV screening test also is suggested to rule out the possibility of urinary tract infection
and HIV. You consult your physician and they will guide you better.
Get well soon.