For the last few months, I have been extremely itchy to the point where I can't wear underwear and have to put on a loose pair of sweatpants and sleep with my legs apart so I'm not touching or rubbing against myself. I am very itchy on the inner labia towards the vaginal opening but there are no break outs unless I scratch. I have been tested for STD's and I came back clean and I have only been with 1 man, my current fiancé, my entire life so I'm not too worries about that. There is no oder, irregular discharge or anything like that. Just extreme itching where I am literally digging at myself for hours with no relief. Any idea what it could be??