strange bump under skin on face?

Shannon Asked: strange bump under skin on face?

first off, i'm a seventeen year old female. i have a bump on my face, right under my ear on my jaw. it's not visible, but i can feel it, and i don't have another one on the other side of my face. it hurts a bit when i touch it, and it feels like i can move it with my finger. it's probably about 3 centimeters in diameter.

i'm pretty sure it isn't acne, because again it's not visible and this just hasn't happened before.