could be a cyst on the outside....its happened to me before . just need a little antibiotics. nothing to worry about, especially if you are still a virgin. go see your doc. good luck
It is probably your bartholin gland. It scared me to death when mine came up. You should get really hot towells and put it on it and also take hot baths. If it does not go away then you will have to go to the doc and they will drain it, you will have a tube in for a week, but when it is gone it feels a ton better. Mine kept coming back and when I got lapro I told him to take it out. I would not recommend that. it hurt and it was swollen for a while.
You will be fine they are not cancerous. It is just a clog in one of your lubrication glands. Hope this helps!