Okay, so a couple times a year I get these sores on the lips of my vagina. They remind me very much of canker sores that you can get in your mouth. These sores only hurt when I use the restroom, but they hurt so so so much. I just wan to know what it is and if there is any medication I can get for when they reappear. At one point I thought I somehow had herpes, but I have never had regular sex or oral sex. It's just really scary and it hurts so much. I usually get several one each side. They're circular-like I guess, and whitish. I don't know if they're ulcers, or abscesses, or a vaginal canker sore. They usually only last for a several days and then are completely gone. I thought maybe it could be a yeast infection too, but i really just don't know. I can usually tell when it's coming because I get really itchy down there, which is why i think it might be a yeast infection. Anyways, any information would be greatly appreciated.