It felt like I have a case of athlete's foot there. I investigated with a mirror, and I can see two red, inflamed cracks/tears in the skin, about 1/3 inch long at the very top of my slit/rima pudendi. They look to be deeper than the first layer of skin, similar to how athlete's foot will often "eat through" the first layer of skin between your toes. The cracks run "dorsoventral", that is, parallel to the ground, from the external vulvar skin to the fatty pad of flesh that ends just above the clitoral hood.
I haven't had sex in more than a week, I've been very gentle with the entire area, and yet, because this is my first yeast infection, I have no idea if this is a typical occurrence with them. Can I treat with Lotrimin? Or should I head back to the doctor?
Edited to fix midnight directional confusion.