I think its mart to get all of it checked out.

I was dx with TOS and still am. But it as my thumb and index finger that wen numb and tingled the most. Both sides. While my TOS aggravates that it is a cervical issue with c5/c6. Doc called it a retrolithesis/subluxation. Mention it to the spine doc. MRI's don't often show it because you are lying down and your neck is in an ok position. Ask for extension and flexion x-rays that way its shows what happens when you neck moves.

THe painful shoulder could be related. BUt also you might want to talk to your doc about frozen shoulder. I currently have that and its painful and I certainly cannot lift my left arm.

Sheesh i am a mess

Good luck at the docs. Remember sometimes its a combination of things not just one and they can certainly feed off each other. For some it is TOS for someone like me I learned I had several weaknesses that feed off each other and I have learned their individual signs and learned how to adjust to each and treat them.

Good luck!