Welcome to H.C.M
With little information and as per the history you have given and the clinical findings you may be suffering with Temporomandibular arthralgia
and that is possibility of causing cracking sound in your ear. I would suggest you to give rest to jaw. take soft diet
and you can take some oral analgesics for four days.
But still I would suggest you to consult the Specialist if you don’t get relief as on examination the findings may be different and line of treatment may have to be changed. Please don’t hesitate to consult and ask for any more query. i will be pleased to answer.
With best wishes for a speedy cure
The Health Caremagic Medical Team