I am glad to hear you are seeing a doctor for your physical health, Mera. Like many of us, I also had the experiences of feeling extremely sick and thinking I had done serious damage to my body. And, like for many of us, all of those things cleared up with sustained sobriety. It took a while though when I first quit and after a bad relapse that lasted a couple months. Maybe ask the doctor about potential new treatments for anxiety and cravings that are not habit-forming and you could take as needed, not constantly.
Best of luck!