I have a weird lump under my earlobe?

i have this weird lump, its around a pea size, under my earlobe where the earlobe joins the face... ive had it for ages, its never bothered me once, when i poke it, it hurts, if i squeeze it, it hurts, but it doesnt cause any immediate pain unless i do something to start the pain off.... any ideas what it maybe? how to get rid of it? Ive had it for quite a while now and i was very curious at first, got bored of it and left it for ages but now im starting to wonder :/ im 15 if its any help