Verified answer

Maybe you should see a doctor before something falls off instead of relying on the internets.

It could be an ingrown hair.

It could be a cyst (fairly common, actually).

It could be some sort of infection.

In any case, you should go see a doctor because it could be something relatively minor, but it could also be (or develop into) something more serious, and medical help is always good in situations like this.

Hope this helps, and good luck!

Have you been masturbating? Pants too tight? Using a douche? Perfumed pads? New clothes soap? Waxing? Shaving?

Try a cold washcloth to relieve the pain. If it persists you need to see a doctor.

It could be some kind of infection so you might want to go and talk to your doctor about it. I think he/she will know what it could be and whats right for treating it. Or, maybe it could just be period cramps, because women tend to get bloated when they get their period.

it could be a Urinary Track Infection and you can get that from anything from too tight pants to holding your bladder too long.Definitely go to the doctor.

if you use scented tampons that could be the problem

Pelvic Inflammatory Disease. (PID)