You have been thoroughly vetted physiologically, and it appears that nothing presented from those procedures. I am not familiar with Lamictal, but Xanax has been part of my anxiety treatment. I am now taking Klonopin, and have for over 25 years, and it works for me. I might add that I have been and am on an antidepressant as well for the last 35 or so years. In addition to pharmaceutical assistance, talk therapy could help. Are you depending on your primary care physician, or have you also seen a board certified psychiatrist? You’ve had a substantial physical work up, perhaps a psychological assessment is a logical next step if not already done. Anxiety is difficult, but is a manageable problem. Stick with it. These are tough times socially and politically. Anxiety is a byproduct. Thank you for having the courage to stand up to it and to reach out. This is a good, safe place.