@chezy17 , it’s difficult to determine whether your pain is neurological or musculoskeletal. The following may help this determination :-
You’re right to be suspicious of the stress. This can cause flares as a way of your body advising you that all’s not well.
I always relate stress to tension. This tension may be felt across the shoulder blades, from “hunching” the shoulders.
But, there does seem to be something neuropathic going on too.
Does this help at all?