This can be caused by a number of things. The 4 most common are an infection, a blockage in the tube, a sexually transmitted disease or the blood supply is pinched. You should get checked by a urologist to learn the cause of the pain, the extent and prevent any long term damage.
This can be caused by inflammation called inflammation called epididimytis or orchitis. Other causes can be hernia, trauma, twisting or tumors or post-surgical pain. These conditions are easily diagnosed and treated but, approximately 25% of the time the source of pain goes undiagnosed. A new surgical technique is on the market that can help relieve the pain.
Chronic testicular pain can be caused by direct trauma to the testicles, brusing, twisting. Twisting can cause lessening in blood circulation. Infections are another cause.
In a quarter of all cases, causes for chronic testicular pain cannot be found. However, when found, causes can include hernias, infections, tumors, or trauma. A cause can also be torsion, which is a twisting of the testicle.
Well this could be due to the destruction of mass tissue. And that is why you keep feeling the pain. Do you feel pain during sex as well? This could also be through heavy sex and not being careful with your testicles. Get checked by the doctor because this is serious.