So first sorry for the TMI. But I've just noticed a kind on my vagina from the ending of my stomach right down the middle to my lips. I read that it's normal from belly button down. But haven't seen anything about vagina. And it's noticeably dark where it was never there and suddenly today it is. Any idea what it could be? It's not dirt or anything because I just showered and I clean really well. I even tried to reckless and scrub real good to confirm and still won't come off.