This symptom can be for a number of reasons.
Urethral infection [tube of the penis].
Testicular infection or epidytimytus. [less likely if you don't have pain].
Enlarged prostate, which keeps the bladder full.
We do not diagnose on line, but your physician can narrow this down with an exam.
See your doctor, have an exam, prostate exam and urinalysis and go from there.
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