About two years ago, I recieved unprotected oral sex from my boyfriend one time. He had never had any sexual encounters beyond kissing with anyone before me and I had not either. I don't remember noticing any sores afterward, but many months later, I discovered one little pimple-like sore near one of the lips of my vagina. It only hurt a little bit and then went away after a few days. I barely even noticed that I had it and I have not had it since. It never oozed anything and it didn't pop. I don't know if he gets cold sores or not, but he says he has not. I have never given oral and I haven't recieved oral at all since the one time and I have no other symptoms of oral herpes. Is it possible that the little sore could have been herpies, and if so, how would I get tested if the symptom is not present for a doctor to test?