Dear user, Thanks for writing. I understand your concern. Erotic thoughts, curiosity of sex and attraction towards opposite sex are common at this age due to raising sex hormone level in your body. This hormone brings changes in your thinking, sex drive, urges, physical appearance and genitals. This is absolutely normal. If you have excessive thoughts associated with guilty feeling and interfering with your day to day functioning then you may have counseling with sex therapist or psychiatrist. No need of medicines. Relax. Warm regards.