The views expressed by me are for educational purposes only and do not establish a doctor patient relationship.
Thanks for your question.
Yes, Pinched nerve at your shoulder level or at cervical spine level ( brachial plexus) can cause numbness of your fingers.
If physical therapy is not helping you need to see a neurologist for further evaluation with scans and ner conduction studies
what are ner conduction studies
nerve conduction study --this is done to check for nerve damage.
Is this something I need to do soon?
you should check this out soon since your symptoms are persistent for a while and physical therapy not helping.
You can see your orthopedist to consider a second steroid shot.
If he thinks that you will need a NCV study then he will send you to the neurologist.