only way 2 be sure tell mom go 2 gyn if your not sexing nothing 2 worry about than smile
It sounds like a cyst or an ingrown hair. If you are a virgin, then it isn't any sort of STD. Do you shave there? If so, it is probably an ingrown hair. It may even have a darkish color in the center of it...that's the hair. They hurt, but if you get the hair out and whatever fluid is in there, they feel sooooo much better and then they dry right up.