Pain in tragus and bad hearing within inner ear. Small lumps along jawline down to around cheekbones. Jaw pain and stiffness. History of ear infection.

Pain/swelling. You may have 2 coincidental but unrelated infections. Your Physician must examine your ear for infection. Your Dentist must examine your mouth for infection. Please see both as soon as possible.
Likely ear infection. If you have had multiple ear infections, you could have something more serious occurring, such as a cholesteatoma. I would recommend seeing your physician.