I had the Moderna vaccine as well and developed similar symptoms. It took almost one year and several visits to multiple physicians and I finally have a diagnosis of CIDP
possibly from the vaccine. I am a health care provider myself and I had to be very vigilant in my own care until a diagnosis was made. What finally caught my providers attention was the results of my EMG. I am currently receiving IgG infusions and immunotherapy. I don’t think I will ever be cured but with medical therapy I can function without constant pain or muscle weakness.
My advise to you is be strong and if you are not satisfied with your diagnosis and treatment find another provider. Many times neurologist that specializes in neuromuscular disorders are familiar with complications post COVID vaccine. Be strong and stay in touch with this group.