I have a little lump on the side of my vagina. I am 13 and I have never had sex before so it's impossible for it to be an STD. The pain from it on a scale from 1-10 was about a 5. I squeezed it just a little and white puss can out. It got a little smaller after that. I do shave down there. Any suggestions on what I can do? And what it might be?