What Causes Pain, Numbness, And A Feeling Of Movement In My Left Testicle And Scrotum After Having An Inguinal Hernia 6 Years Ago?

Hi , 6 year back I suffered inguinal hernia and its cured automatically through exercise after sometimes I feel heavy pain on my left testicle then after sometime the pain gone like thus happend two times Now i feel my left testicle little down and numbness Also most of times feeling something moving like worms or lice on my scortum And itch comes without skin identification