is this normal after being punched in the face?

I got punched in the face(the right cheek)- not too hard but I had a headache and it swelled abit. since then when i try to smile the right side of my mouth wont go up into smiling position- like it kinda droops and is noticeable. If you look at my whole face when I smile now its a lil weird, one side goes up and the other barely moves up at all and gives the appearance of an awkward smile or grimace. there was no broken skin either. it is slightly tender but really doesn't hurt but still feel tights if I smile alot. is this normal and if not what could be wrong?

2010-06-06T15:10:24Z

the punch was nine days ago

Anonymous2010-06-06T15:06:26Z

How long ago was the punch? If it was only a day or two, it's not recovered yet. If it was a month or more, you may have suffered some nerve damage in the area.