im a 15 year old boy and the tip of my penis feels very sore to the touch, is red and has a small red swelling at the very tip which can only been seen with an erection. I was wondering if this could have been from Masturbating to much, as i have just had my summer holidays in which i was masturbating at least 3 times a day, sometimes 4, and i was wondering that if i didnt masturbate it would go away, is this true or will i need some medical treatment. Also i am a virgin, havnt had any form of sex, so it couldnt be a sexually transmitted disease.