My DR told me they are Cyst. And will go away on there own. And it does believe Me.
if it doesn't have a head on it, then don't try to pop it. but it might be What ^^ said. try a little alcohol and run it on there with a q tip and see if it grows a head and you can pop it.
It doesn't hurt at all lol its very hard to see unless I look in a mirror with my legs opened lol tmi .. hoping it goes away on its own though
Might be an ingrown hair still... that happened to me but it didn't get that big and I cut things open like that (that's how I found out what it was) ask your doctor next time you go