How To Cure Black Spots Under The Vaginal Area?

hi doctor i noticed about 2 months ago i started to itch under neath and now im in so much pain. I am raw and cut on the inside of my legs i found 2 black spots on the right side of my vagina erea? i am 41 and suffered with very heavy periods in the past i had a op to stop them. i still have the pill injection.