Pulled a heavy object, having slight heavy sensation in right groin and testicle bag. had inguinal hernia operation 30 years ago. ultrasound clear.

A hernia to be: you did some damage to the muscle and ligament in the area of the hernia repair most likely you did not have a screen 30 years ago when you hernia was repaired you are having a hernia in the making that mean you are trying to break the old repair normal ultrasound mean nothing for a hernia most likely you will start noticing a bulge next see a doctor