Also, if you have had oral sex herpes could be a definite possibility since oral herpes (cold sores) can be contracted genitally. But at the same time if it is refilling and not crusting over or spreading it is probably not herpes and could very well just be an absess. Go to the gynot asap if you have not been to the gyno before since you haven't had sex call your primary care office and see what they advise you to do. Good luck
I don't know for sure what that could be. But you don't have to have intercourse to be exposed to std's. Especially, herpes or warts. I'm leaning toward herpes. Any type of genital to genital contact can transfer infections. You need to see a doctor to get a proper diagnosis and treatment. I'm so sorry if this scares you. I was only 19 when I contracted genital herpes. As scary as it is, please go see a doctor so you can find out what it is for sure.