question: Hi, I ve been having pain in my left testicle... It s been going on for 4 days and i once ejaculated and i felt a sharp pain. I stopped masturbating and i still feel a ache, very uncomfortable especially when i lay down. I did a self exam and i felt this tiny bump on the top right, but it feels on a vein? I m not sure the difference and the bottom i felt a line i think its a vein.