Hello, I just noticed on the inside wall of my vagina close to the opening , there is a dark spot. it dos not hurt, itch, nor is it a bump. I have not have sexual course since 2003, and my pap that i had at the beginning of the year came back normal. i am 48 years old and my doctor said i may be in the premenopausal stage . i ve never had this before...ever. Please advise.