hi! I am a 35 year old man, I have 2 children and have a healthy sex life with my wife, however, recently for the past year I have a lot of pain in my testicles, the gp has not examined me but she has asked if there are any lumps , I have since checked and I have many lumps in my left side but only 1 in my right! is this a bad sign? will I have to be treated for cancer and can I have more children?