How often do chlamydia/gonorhea in men cause testicular symptoms, especially early on? does that usually happen early or in general? for both of those

Epididymitis?: Probably under 1% of urethral gonorrhea or chlamydia leads to epididymitis, which generally causes severe pain and swelling in a single testicle, usually a few weeks after catching the infection. Milder aching of both testicles does not indicate epididymitis or testicular infection. That's a common symptom in some men with any genital infection doesn't indicate anything serious.