I've experienced some pain/ache in my left testicle in the last few weeks. I originally felt it around the same time i sustained a minor groin injury. Now the groin is fine, the testicle pain is still present. However, most of the time it's a very low dull ache, sometimes lasts for 30mins - hour, and then it disappears and comes and goes. Today i done a lot of sporting activities and now it's a bit more painful. Not so much when sitting down, but walking increases the pain. Can you give me some advice?