for over 4 months now i have seen numerous changes to my penis, as i had un-protected sex with a partner who has intercourse before, i am also 15 years of age, i am just hoping you can help me, to start of with somtimes the skin on my penis head is dry, and leaves sort of engraved lines, as if they have been dinted into the foreskin, also some red patches have appeared before, and at the tip of the penis the "japs-eye" look's as if it is swolen, if you can help me il be greatful, i