4.Painful Ejaculations.
There are many documented cases showing an association of prostate cancer with an inflammation called prostatitis. Prostatitis means that the prostate is inflamed due to infection. When these symptoms occur, the inflammation of the prostate can cause irritation to your glands upon ejaculation resulting in painful orgasms. This is one of the most common signs of prostate cancer, and if experiencing pain during ejaculation, you should see a doctor as soon as possible.