Hi...I am so sorry you are in so much pain. I am assuming you have had all the tests run to rule out other things this could be besides anxiety. Saying that, I have fibromyalgia along with anxiety and they are two conditions that many times go hand in hand. It is a chronic pain disorder that comes and goes and is very benign. It is aggrevated by stress. I have most of the symptoms you describe. But please consult further with a doctor and have some more definitive testing done. Insist. From my own experience, some doctors are quick to 'blow us off' and blame everything on anxiety. It took six years before a Rhuematologist dx'd me with fibro.
I hope you find relief soon.