Hellos am 16, and my vagina has been very very itchy for a couple months. My hymen bleeds when I scratch it. For a while I had some discharge but I don't remember what color. I've had sex three times but that was months ago. I'm so worried I have an std and i dont know what to do. Please help. Also one of my breasts is significantly smaller in size. I dont know if that has anything to do with this but maybe it ties in.