Hmm.....I wonder if my chin strap is too tight. I did bring it up to my dentist. It was actually the reason I went in for an appt. I explained that I had problems with TMJ in the past but he brushed it off and contributed my jaw pain to a tooth that needed a filling. Fixed my tooth but I'm still having the problem so I go back next week. I did wear a splint when sleeping when I was younger because I would grind my teeth but I don't need it anymore because I stopped grinding. Thank you both for suggestions. I appreciate it.