My tumor was in my mouth. It resulted in not being able to swallow or open my mouth as the jaw muscles tightened. My last chemo was a year ago Feb. I worked with a physical therapist and continue to do exercises on the muscles in my face, jaw, and neck with no noticable improvement. All I can say is keep trying and don't give up. Also, I was given a feeding tube due to weight loss. Please be aware that is an option before you lose too much weight. Best wishes to you.