Tongue feels swollen jaw hurts cant open my mouth wide?

Possible infection: Swelling of the tongue can happen from minor trauma when being bitten or from a blockage in the salivary glands that release saliva below the tongue. Another possibility, since your jaw is sore, could be an infected tooth or inflamed tooth that never erupted. Another possibility is muscle spasms of the jaw muscles not allowing you to open. You should see an oral and maxillofacial surgeon.