Im so scared .. i have a really itch rash that goes from my pelvic area( i have a fat overhang that starts from under bellybutton) , inner thighs, vaginal lips, and inbetween my butt cheeks... i cant see the bumbs because my boobs and abdoman prevent me from seeing down there. It really itches . Could it be an std and it spread to butt and up above my pubic hair line, or a yeast infection? Im so embarrased to go to doctor. What could this be .