Hello Welcome in H.C.M. I have gone through your query regarding sore throat, swelling under ears on face though you are already taking medication in the form of steroidal nasal spray. Your clinical story clearly favouring for the respiratory tract infection which may be viral or bacterial and later it had got involved the parotid glands as well (parotitis). I would like to suggest you that please consult your physician for examination,investigation and treatment. If it comes viral parotitis than please take care of as parotitis is a infectious disease. Regards.