Need suggestions/advice

Not sure if this is the right room to post this on but please tell me if I did it in the wrong place. While on vacation my boyfriend didn't listen to me and had worn the wrong swim trunks and rubbed the tip of his member raw to where a scab has formed I read online don't have sex until it heals. But has this ever happened to anyone else's guy if so do we use neosporin and how long before we should have sex again, and should he consult with his dr