hi, i have a small tender spot on my right testicle, its sore to the touch and it feels like a small pimple, there is no sign of swelling or redness, i am 40 years old and a bit worried in case it is cancer. i felt a slight ache in it a few days ago but when i had a shower the pain went, when i forget about it i dont feel any pain but when i touch it it becomes uncomfortable for a while. Thanks.