Hello, You are suffering from lower jaw pain and pain is also there in your ear. Due to pain you cannot yawn, chew or blow your nose. You are a teeth clencher. You have recently under went a CABG surgery. You are suggested to get yourself clinically examined by an ENT. Treatment will depend on the cause / pathology causing you pain and discomfort. If it is ear infection or TMJ, you will be prescribed an antibiotic and an anti-inflammatory medication to help reduce your discomfort. If it is due to dental infection, cavity or other oral / dental problem, it will be treated accordingly. If pain is due to teeth clenching/teeth grinding then a mouth guard can proof to be helpful. Mouth guards can either be purchased at a drugstore and molded to fit your teeth, or you can have one custom-made at your dentist s office. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Nupur K., General & Family Physician