Prostatitis can sometimes be difficult to treat. A prostatic massage where the prostatic fluid can be sent for analysis and culture can be considered. I would also consider a transrectal ultrasound to evaluate for any prostatic abscesses.
If the pain continues, you can look at non-infectious causes. This can include a urethral stricture or polyp, which can be evaluated with a cystoscopy.
A pelvic CT can also be considered to image the groin for any masses which may be causing discomfort.
These options can be discussed with your personal physician.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
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