im 15 almost 16 and i gusse u can say i am sexually active i have only had sex one time about a cuple of months ago. i was ok for a wile and then my tights and my vigina started to itch and i have bumps there too i pop them a little puss and blood comes out and then it turns hard..and i ok do i have a STD? or something Plz help im confused! :(