dear doctor, today when i was laying in bed i started masterbating by wrapping blankets around mypenis and sort of humping all was good until i felt my penis hurting now before this i had to pee but figured id ejaculate before i went to pee. now after my penis started hurting i finally looked down, my penis was bleeding from a rug burn like cut i got from the friction between my penis and the covers. after i noticed the blood i went into the shower to clean it off. once there i came to notice a fleshy whiteish bump on the left side of my shaft, now it doesn't hurt but it does a little when i squeeze it gentley. i don't know what to do. go to the doctor or just wait. please help haha