Seven years ago my testicles seemed to change in size. The left testicle has totally shrunk in size while the other has increased considerably in size.I have never experienced any pain or problems with ejaculation, going to the toilet, etc.You may find it strange that I have never had this checked out but as I say this has not caused me any pain or problems in use whatsoever.I am still a virgin so the issue has not been discussed with a partner. Can you please advise what it might be? I obviously realise I should see a GP as soon as possible to get it looked at.The reason I am suddenly concerned about this now is because I am now in a relationship that may well progress further sexually and do not want to cause any embarrassment on either side.A reply with any suggestions would be appreciated.Please do not think this is a hoax, I am of a very shy nature and a visit to the doctor petrifies me, probably more than most, particularly as I have continuously left it for several years.