I am sorry you are feeling like this! I hope it gets better soon. My symptoms of my anxiety are, queasy stomach, as well as a pain in my stomach, shaking hanRAB, almost like a shaking inside me, racing thoughts, racing heart/heart palpatations, and hyperventilating/not being able to breath.
Are you going to a counselor? My dr suggested it, and I am really thinking of going so I can learn some methoRAB to help my physical symptoms, you know? Like maybe some sort of breathing technique or whatever.
Hang in there- it'll pass. Mine usually does- but I usually just get my anxiety before I have to do something like make a phone call, drs appt, going to my daughters school, speaking to people I don't know very well, meetings at work, going out with frienRAB etc. And when I start doing whatever it is I am having a panic attack about, usually it subsides when I realize nothing bad is happening and its going well.
Anyway,- hope you do better soon. If you get it at night, have you tried a sleep aid? My dr prescribed me Arabien- 10mg and I actually cut it in half and it works great. It helps me sleep and stop my racing thoughts.