Hello, first of all sorry for my english so bad right now, but I will do my best to improve.
The whole of your symptoms reminds me of a rheumatic disease which I suffer myself. It is called Ehler Danloss, I put a link to fully understand the phenomenon. https://ehlers-danlos.com/what-is-eds/
It is relatively new and little known as a disease. I understand your suffering because I have almost the same symptoms. Indeed, sport helps a lot in this kind of problem. Moreover, being a student in psychology I advise you to do "mindfulness" sessions, you can do them alone is quite simple to understand. And it's the best tools I have for control my stress, I put a little link to understand the usefulness. https://www.helpguide.org/harvard/benefits-of-mindfulness.htm

I wish you a lot of courage.