Thank you for your query at DoctorSpring.com.
I have read details of your query.
If it is only pain which is of severe nature and not associated with any stiffness of shoulder, then this may be due to an associated injury to your back. You should have a X-ray of your back to rule it out.
If there is stiffness of shoulder then it could be due to the sling. In this case, you should consult a physiotherapist for help with physical therapy.
I hope this was helpful to you. Feel free to ask queries.
Patient replied :
I haven't wore the sling in over 7 weeks could it still be from the sling?
Are you doing exercises after removal of sling?
If you are not doing exercises then it is due to stiffnes of muscles.
If you are doing exercises then it may be due to some associated bony injury which may need a x ray.
Hope this will help you.
Feel free to discuss further,