Hello, This type of pain and the location is suggestive of epididymitis, which is inflammation of part of the testicle, and this not uncommon in males especially in young age. It is usually treated with ten days of antibiotics, usually ciprofloxacin and there are no permanent consequences.   Masturbation and intercourse should be avoided till pain persists, if possible since I may prolong inflammation course. Some more serious conditions such as tumors or torsion are rare, but in doubtful cases, you should do Doppler ultrasound or scintigraphy. In this particular case, I don’t think it is required, and it should improve on antibiotic therapy. Hope I have answered your query. Let me know if I can assist you further. Regards,  Dr. Ivan R. Rommstein