Im 20 now and recently there has been a large tube situated behind my left testicle im not sure if its always been there and im just noticing it more now but it feel rather large im not sure if it supposed to be i think it may be epididymis but it isnt that supposed to be above not behind also recntly i have noticed that my right testicle tends to retract occasionally it always come back out after a few minutes.
any help you can give thanks
anddy