@funk24 I would recommend looking at thoracic outlet syndrome as a possibility. I have TOS which does cause the symptoms you described for me. Basically it is a compression of nerves and blood vessels between the rib cage and collar bone in several areas. This diagnosis is often missed because it isn't covered well in medical schools. I do physical therapy with myofascial release which helps a lot and MFR removes restrictions that are causing pain and gets the body moving better and back toward normal alignment. Posture is important. It is hard to find specialists who understand TOS, so look for one at a multidisciplinary facility that treats it. Neurologists can diagnose TOS as well as vascular and thoracic surgeons. Here are some links for information.
https://mskneurology.com/how-truly-treat-thoracic-outlet-syndrome/
https://connect.mayoclinic.org/discussion/myofascial-release-therapy-mfr-for-treating-compression-and-pain/