6. Your Breasts May Swell
It may sound strange, but another symptom of testicular cancer is tenderness or swelling of the breasts along with discharge from the nipples. Testicular cancer produces a hormone called human chorionic gonadotropin (HCG), which is the same hormone responsible for making breasts grow. Although most testicular cancers are painless, you may notice other symptoms such as abdominal pain, back pain or coughing up blood if cancer has spread to other areas of the body.