I had some sort of infection years back that caused my right testical to swell.. I was prescribed penicillin after being given a shot.. Swelling went down emediatly after the shot but my stoical shunk.. I didn t think anything to much at the time because the pain was gone. I assumed it would return to its natural state.. It never did.. It doesn t hurt to touch and isn t ever sore and I ve never had any pains or anything but I was just wondering what might have caused this and is it reversible or what can I do?