I get pain in my groin after sex (ejaculating) never have the problem when masturbating. Its on the left side of my penis just above my testicles. It goes away after a few hours but until then its a sharp stabbing pain that takes my breath away. Especially when standing up or moving around.
Greetings I can understand your concern I think you need to have a physical examination with urologist to rule out any infection like epididymoorchitis. If so it can be cured with necessary medicines. Hope my answer helps you. Regards