Hello @summertime4 what a fantastic question. I’m not a doctor by any means and can only speak from a tremendous related to my own experience. Before attending Mayo Clinic treatment program my local pain treatment center gave me a lot of treatments. For 1 entire year I did everything they could think of, medication heavy horrible medications some of the drugs you can no longer get today. 12 to 22 nerve block injections every single week for the entire year!!! The sites included 5 to my skull, the remainder to my neck, my back, my sternum. I attended some amazing Physical therapy programs, Aqua therapy, chiropractors, acupuncture, kriotherapy, psychologist, they even molded a cast to try and keep my breasts from moving (that was crazy funny looking back). We tried everything but the sternum would swell so bad and have severe physical changes but nothing worked. I could no longer sleep, no longer lay in a bed, no longer work, no longer be functioning member of society. At the end I asked my pain doctor here in Illinois if I could take a brake because I could no longer describe the pain as sharp, dull, shooting because they hurt so bad from injection the same sites over and over and over again. He told me it was my negative attitude which was making them not work!!! ☹️It got so bad at the end that I contemplated suicide. So I went to Mayo Clinic in Rochester Minnesota.
Today I own and operate my own company, I and pain medication free. But I am only able to do that because I use the skills I was taught every single day of my life. I would not be here without the skills Mayo Clinic taught me.
https://www.mayoclinic.org/departments-centers/pain-rehabilitation-center/overview
So your question are you going through withdrawal? Only you can answer that. We can’t feel your pain. Anxiety is a terrible disease that messes with our body both emotionally and physically and can cause all the same symptoms as withdrawal and depression. Mayo treatment center will teach you techniques to help you identify it and treat it. You are the only one who can discern the feelings. We are merely outsides guessing at what you are feeling.

Hope this helps.
Dawn