A car door hit my upper lip & i got a fat lip. should i worry about my upper central incisor? the tooth isn't sore & it doesn't hurt to eat or chew.

Should be OK: If the tooth is not loose or painful, i would not be worrying too much. The trauma to the lip caused it to swell but that should subside in a couple of days. If it is not painful, no need to do anything. If it is too sore, motrin/aleve/tylenol may help. If things don't get better or if worsen over next couple of days, consult your doc. Good luck.

Incisor: Generally no pain, no loose tooth no foul however if the tooth changes color over time (becomes darker than all the rest and this may take months or years) then the tooth may have died. Don't stress it and don't check daily, just let the lip heal and do not worry.

Contusion injury: Seems as if you have a soft tissue contusion injury and the tooth is okay. Use nsaids and ice to help get the swelling down.

Probably ok, but...: It's probably okay, but just to be safe, have your dentist take a look, and get a baseline radiograph (x-ray). Pay close attention to whether it feels a little loose, and to whether it starts to darken in color... Occasionally an injury is actually a little worse than it appears...