Sorry about your troubles but this is not enough information to go on:
1) are you double jointed - can you put your hands on floor and overstretch elbow/ knees past straight?
2) Is there significant pain issues in your family?
3) Do you take any vitamins ( especially Vitamin D)?
4) what is your age and how did widespread pains start? Was there a car accident?
5) do you sleep well? - is there much morning stiffness and if so for how long?
6) do you work on a computer?
7) Do you have troubles with food like wheat? - Do you have an irritable bowel?
8) have you had any imaging on your neck?
9) from 0-10 how bad is the pains usually?
10) if you put your arms up in the stickem-up position for 30-60 seconds does that make your hands numb?
Frontiers | Microvascular Response to the Roos Test Has Excellent Feasibility and Good Reliability in Patients With Suspected Thoracic Outlet Syndrome | Physiology