One side of my Labia on the inside has gone black, a large vein going down it has gone black and it is painful, sore and itchy, it is also much larger and hanging down lots more than the other side? it also seems to have dropped. his has all happened within the last 6 months. It wasnt like this before? please help as this is uncomfortable and worrying, i am not sexually active at the moment and it does make me concerned about meeting a new partner.