Hi. Last night, I was hit by the buckle of a seat belt while getting out of a car just on the side of my chin. Initially there was a little swelling, and a bump. Today, the swelling went down, but the lump is still there. It's about a half inch in length on my jaw line. There is no bruising so far, but it is in almost constant pain, and so tender, it hurts when something even brushes against it. My jaw is also a little tight. I can still talk and eat, but it feels like I'm clenching my teeth together, even when my mouth is open. Is my jaw broken? What can I do to ease the pain? I have a doctors appointment in one day, but what should I do until then?