Suggest Remedy For Pain In The Penis

Hi, may I answer your health queries right now ? Please type your query here...My son got hit in his penis a few days ago by a soccer ball
My son got hit in his penis a few days ago by a soccer ball and unfortunately in the next two three days has again been hit while playing around. There is no discoloration but his penis is slightly erect and he is complaining of pain. What should I do?