Welcome to HealthcareMagic forum.
As per your discussion, it seems you are having genitourinary infection
probably involving the prostate - prostatitis
Inflammation of prostate referred to as prostatitis is a close possibility that can explain your symptoms. The enlarged prostate
again is attributable to this condition. Getting your urine and semen tested - routine analysis and microscopic studies / culture can help you predict the nature and type of infection.
This can be followed by a brief course of appropriate antibiotics and plenty of fluid consumption.
With these measures and abstaining sexual intercourse till recovery will benefit you.
Consult your nearest urologist
and discuss your problem. He/she will guide you through the investigations and treatment.
Wish you speedy recovery.