Hi, a few days ago I began to experience left testicle back radiating to my lower left abdomen. No recent trauma, I don t feel any lump/bumps, it doesn t feel to be swollen, and its just kind of an achey nagging pain. This doesn t stop me from physical actively either, I just ran two miles today without any pain or issue. Any ideas on what this could be? Im 30, no medical problems, no medications, on major surgeries