No, pain in ear and jaw are not symptoms of brain tumor. Brain tumor has many symptoms. Among them sever headache is major symptom with nausea, vomiting, vision problems, loss of sensation and movement in arms or legs, hearing loss, seizures and balance problems. Your problem can be due otitis media or Temporomandibular Joint disorder. In my opinion, don't waste your time and visit to an ENT specialist for proper diagnosis and treatment.