I would go through a couple more rounds of misdiagnoses and antibiotics before I was ultimately diagnosed with stage 4 prostate cancer. A New Diagnosis... And More AntibioticsIn June, my symptoms were so bad that I went back to the doctor. Getting the DiagnosisIn addition to a biopsy of my prostate, I had a prostate-specific antigen (PSA) test done—a blood test that can help detect prostate cancer. Together, the biopsy and PSA test showed I had prostate cancer. Even though my mother had cancer and I had thyroid cancer 30 years earlier, I wasn’t familiar with cancer staging.