Hello @Jaz5 I feel for you. Anxiety can be crippling. Mine is under control at present, but I have had it to the extent that, like you, I felt like I was loosing my mind and going to die. The difference was both in intensity and duration. It sounds like you're doing everything you can lifestyle-wise. When I was having trouble communicating with health professionals, I got a trusted family member to come with me. We discussed what I needed to say before hand and made a deal that if I couldn't, my support person would speak for me. It also took me a while to get a good fit in terms of support - gp, psychologist, psychiatrist. I have bipolar as well as anxiety.
Finding a gp who is on the ball re mental health is not always straight forward, but most of them are used to people getting upset. Maybe you could try and give yourself permission. Sometimes I had to take a day off work to allow myself time to process appointments, and deal with the emotional upset. The Drs I saw were very understanding and could see I was a mess; they were fine with writing a certificate for a day to recover.
Another thing that I did was see a physio who could help release some of the tension in my neck and jaw. It took time.
I hope you feel at home on the forum. There are a lot of understanding people here. Take care.