It is on the outside lip. Not inside, but outside. It popped not that long ago. There was a little pus and quite a bit of blood. I had one person say it was an std, and another say it was probably nothing. It doesn't hurt as much now, but it is still a little tender. It's still a little swollen too. There is also a bruise on it now, I guess from popping?

The Cyst could be just and ingrown hair, Witch when it pops there is pus and it bleeds when its basically cleaned out, But having one can leas to a lot more. Its suggested that if you shave to stop shaving and see if you get anymore.