Infection is certainly the most common cause of the symptoms. Urine tests can be obtained for gonorrhea, chlamydia and other causes of a UTI.
I would also check the prostate to exclude the possibility of infection. A digital rectal exam would be a good start.
If infection can be completely ruled out, a cystoscopy can be considered to evaluate for anatomical abnormalities (i.e. urethral strictures or polyps).
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.
kevinmd_b