Hello Lyn, Thank you for your inquiry. I think there be a couple of possibilities here. Sometimes your jaw joint ( also called the temporo-mandibular joint) can become irritated - usually after excessive chewing. This will usually settle down with simple remedies such as applying a cold pack every 2 hours and taking an over-the-counter medication like tylenol. If you develop any other symptoms such as fever, swelling, sore throat, headache or vision problems I suggest calling your primary care doctor. I hope this helps. Best wishes and I hope you get better soon. Adrian Rawlinson MD