Welcome! Part of what you're experiencing sounds like my health anxiety - concerns about
health despite having good results from all tests so far. I would encourage you to check into therapy - either in person with someone or through one of the online sites like MoodGym - that can help you to develop some tools for keeping your thoughts from going to the worst-case scenario.
I remember having the jaw-cracking and popping issues when I was younger. It was not diagnosed as TMJ, but since I had tons of orthodontic work done that changed my bite pattern and jaw behavior, I can believe that's what it was for me. If that's the case for you, I hope the chiropractic treatment will help correct the issue.
Try to hang in there, and know that you're taking very good steps toward figuring out what's wrong, by seeing your chiropractor and physician. As you get some answers and find more questions, be sure to ask them not just about
a diagnosis, but about
what might help to reduce the sensations, or what else should be tested. When my helath anxiety gets out of control, information from the doctors who know me best helps some.
Co-Moderator, Anxiety and Panic Forum
DX: Anxiety, Depression, LPR (acid reflux)
Meds: Paxil, Nexium, Zantac