Thanks for the query..
As per your complain pain in jaw radiating to right side of ear especially on biting down and moving the jaw in certain positions is most probably due to disorders in the function of the jaw joint known as Temporomandibular joint dysfunction or TMJ/TMD..
For confirmation consult an Oral Physician and get evaluated and a thorough clinical evaluation and investigation like Panoramic x ray can help in diagnosis and treatment can be done accordingly..
As of now you can take a combination of anti-inflammatory painkillers like Ibuprofen
and muscle relaxant
You can take a soft diet
and avoid excessive mouth opening..
as it can cause unintentional clenching of teeth leading to exaggeration of symptoms...
If TMJ is ruled out then you can be advised night guards, physiotherapy
and a combination of painkiller and muscle relaxant..
Hope this information helps..