Hello, This change in symptoms should be reported to your physician. Particular nerve pathways can cause pain elsewhere with increased pressure or tumor growth. Make sure you consult your dentist and have a present evaluation to rule out an infected tooth. Your dentist will compare X-rays and test for an abscess. Another very likely cause is grinding your teeth. Very stressful situations such as waiting for a medical condition diagnosis can result in this habit. Your dentist can evaluation your mouth for this and recommend a night guard if needed. You may notice jaw stiffness expecially in the morning with a grinding habit at night. If you are aware of grinding or clenching your teeth together, try to purchase an over the counter pharmacy brand night guard. They bulky, but may offer relief and help isolate the cause. I hope this information is helpful and that your diagnosis goes well. I am glad to assist further. Thank you for your inquiry.