Lot of testicular pain

Dear Ask The Doctor: I have alot of pain after i ejaculate and also my testicles suck up inside me not both but one of them i really would like to no if this is common or something very wrong

Dear Joe: The pain that you are experiencing during ejaculation could be caused due to an inflammation or infection of the prostate. An examination of the prostate and analysis of the prostatic fluid may be required to determine the presence of infection for which antibiotics may be prescribed.