I have been diagnosed with tmj and had an mri (waiting on results). i hit my face today and now my jaw hurts even more. can impact worsen tmj??

Absolutely.: Sounds like something's out of joint in your skull and no, that doesn't mean you're a knucklehead. Go back to your doc right away and tell him what happened to you. You may need the services of a facial reconstructive surgeon.

Yes: Although trauma induced symptom flare may be transient. Apply cold compresses day of injury, warmth on following days. Anti-inflammatory OTC analgesics may help.