From the details provided,I suspect you are c/o TMJ
dislocation and pacification of mastoid air cells.
I would suggest you to get a thorough clinical as well as radiological evaluation by an oral and maxillofacial surgeon.
Intermaxillary fixation or immobilization of jaws has to be done depending on the severity of disease.
Avoid mouth opening too widely.Physiotherapy
has to be done.
Hope this helps.