Hello and Welcome!
I am so sorry you had to come join us but it is a soft place to land with many caring members. It sounds like you have had workup and that is a good thing even if it did not bring you the answers you need. Better to check then leave a stone unturned.
Has anyone ordered any PT for you to try and get some pressure off? With spinal issues it can take a while to see results but it could make a difference.
Please come see us on the CRPS forum. We have an active group and plenty of members who will jump in to welcome you and offer information and support. We can point you in the direction of reliable info if you want to head that direction. I sincerely hope you don't have CRPS but if so you've already got an online support group.
I hope you find relief soon. Sending soft hugs,