Today i am having pain in my left jaw when i chew food or gum and also the pain radiates up into my left ear at the same time. there is no swelling. ?

See an ENT doctor : If you are having jaw pain with chewing that radiates to the same ear, i would go to see and ENT doctor for a check. Throat, mouth or neck pain can radiate to the same sided ear through arnold's nerve. The pain radiating there makes sense, but the pain should be checked out!

TMJ: Likely a TMJ problem but need to rule out other issues like cavities and dental problems.