I recently had completely protective vaginal sex that lasted only a few minutes and did not result in climax for me. Condom was removed and no further contact was made. Two days after the incident I began to experience a very minor pain in the left testicle. 7 days later, I feel some minor discomfort in the prostate region. No discharge and no pain during urination. Any chance this could be an std or just excessive anxiety? Please advise.