If you like i have to yawn to get a full breath, feel like i constantly have to clear my throat , random achy pains in my elbows, tiredness in my arms when using, swallowing feels difficult, loss of strength in hands?

Multiple issues: Please consult a physician and discuss your symptoms and history in detail for diagnosis. From the nature of your symptoms it seems that fatigue is an issue. Refer to this website for more information. https://www.mayoclinic.org/symptoms/fatigue/basics/definition/sym-20050894

Deal with the stress: I think you have more or less made your own diagnosis. Unless you have some unusual syndrome of which I am not aware, your symptoms are all over the place and, as you say, probably stress related. Get into a stress management program, see what symptoms remain and then deal with them appropriately.

Chronic Fatigue: You’re describing a multitude of symptoms that can be related to multitude of different disease processes. However, based on your symptoms it is highly likely you have chronic fatigue syndrome versus anxiety super imposed by significant stress and worry. You should see a physician for work up.