It sounds exactly like an ingrown hair or bad razor burn. Google an ingrown hair and figure out if that's what you have or not. They're more common if you've recently shaved but I'm sure they show up on their own. If you decide it's not an ingrown hair or razor burn, it wouldn't hurt to go to the doctor.
I agree w above posters. When you go for a pap the Gyn will help. Try to take a hot bath. Pamela
You shouldnt worry if you have never had sex, trust me. Its probably and ingrown hair, and those get swollen and hurt sometimes they get pretty big too. Don't work, but if I get out of hand and its there for weeks ask your doctor, doctors have seen worse and nastier things.
That sounds to me like an ingrown hair. Don't worry, they hurt like a b. But they will get better. I always dug the hair with a needle then pulled it...