I had sex with my fiance, we both were virgin .

Patient: I had sex with my fiance, we both were virgin . then there was itching in my vagina and pain also so i though may because of the sexual act but this itching continued for a week along with a liitle pain . i tried observing the lower part with the help of mirror i notice there was a black spot in my inner left labia its rough and pains when i touched it ther is alot of itching also . please tel me what is it and how to cure it .

Doctor: