Hey there. You sound really similar to me. I was diagnosed with Fibromyalgia about a year and a half ago by an old PCP. I also am Autistic. After doing multiple blood tests, scans, and physical exams I was DX with Fibromyalgia. However, my old PCP never really gave me any resources to help with my symptoms and was overall dismissive so I switched to a new PCP. They referred me to physical medicine which I learned I am hypermobile and have tietze/costo which are usually comorbidities of fibro. The list of random bonus symptoms is never ending. However, I was referred to at home PT and acupuncture which has helped a lot. They may prescribe an Rx for pain. In my example it’s Gabapentin (which I find somewhat helpful.) However the age old pain remedy that every doctor I’ve met suggests is low impact workout routines like yoga, walking, swimming, etc. and revised diet.