It's been there for a long time, about a couple of months. It's under neath the skin and it kinda hurts if I push on it. There have been other ones around it but they were all smaller and they all went away. I'm only 15 and I haven't had sex. The bumps have all been under the skin, butsometimes if I squeeze one, some weird puss stuff comes out. Non of the bumps look like pimples or anything though. But the biggest one is still there and is visually noticeable.  It's hard and not pop able like the others. I don't know what it is and it's starting to scare me. So please help me