 [ Symptoms ] what should u do if u cut or scrape the inside of the penis or urethra during rough sex [ Disease ] the is a very unusual sex related injury are you sure you did not mistake your partner for a cactus the damage should heal spontaneously in a few days assuming you do not injury it again but a little topical antibiotic ointment would be helpful if you do not improve it would be advisable to see your medical provider for an examination expect to see some raised eyebrows regading the mechanism of injury if it is on the inside you should rest it and perhaps go to the doctor but i have had plenty of skin irritation from rough sex or masturbation the best thing for this kinda stuff is a creme called man1 man oil it is a multi vitamin creme made just for the penis skin and both repairs and strengthens it naturally all you need to do is rub it into your penis skin once a day there are other benefits too so you might want to check it out hope this helps