I'm 17.. And I have been sexually active. A couple months ago I found a weird lump on the flap of my vagina.. When I looked at it, it looked like a popped vein.. But it ended up popping.. About a month ago it came back but with I white tip and so, thinking it was like an in grown hair, I popped it and puss came out.. Now it's back again and this time bigger and I can definitely tell it's there.. It hurt to touch or anything. This time it didn't have a white tip, but looked like a lump.. Yesterday I was at my boyfriends and went to the bathroom and before I went I looked at it and it popped on it's own.. I have no idea what this thing is and I don't know what to do...