Hello - thanks for asking your question.
The first consideration would be an STD or urinary tract infection. I would have your urine tested and cultured, and urethral cultures for gonorrhea and chlamydia should be taken.
If negative, another consideration would be a prostate infection. A digital rectal examination and prostatic massage can also be performed to evaluate the prostate.
If the infectious route is not revealing, then anatomical considerations such as urethral stricture or urethral polyps can be evaluated via cystoscopy.
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.
Thanks,
Kevin, M.D.