I have studied your case.
It is rotator cuff injury
Along with medication,
You may consult physiotherapist for further guidance. He may start TENS
which is helpful in your case.
You may need to take rest for early healing.
Surgery may not be necessory if recovered with physio and medication.
Also check your vit B12 and vit D3 in your blood.
Hope this answers your query. If you have additional questions or follow up queries then please do not hesitate in writing to us. I will be happy to answer your queries.
Wishing you good health.