Vagina

So recently i noticed a dark spot in my vagina. like inside the fold but on top. and i’ve never noticed it. it’s kind of like the size of a nerd candy but there’s a white dot. and idk if i should be concerned... has anyone else experiences this or have any ??? also for some reason i’ve been super horny like i need something but i can never get off and it’s so annoying because my body and i get so frustrated and idk what to do either.