Well I had sex with my boyfriend a few weeks ago I'm going go through some werid changes . Like there was one day when my discharge smelled like fish & It was brown & I was scared I didn't know what it was ? But then I got my period the day after . So I let it slide but a few days ago inside my vagina walls it itches . I look down there and I have no bumps or anything . I got myself checked for Std a few months ago and I don't have anything . I'm scared it could be something serious I need a advice . I don't know what it could be . I'm very scared i asked my boyfriend if he has any transmitted disease and he says he is clean . What do I have