I had this little pain in left shoulder past two days blade but this morning it became severe. I can move my left arm unless causing a lot of pain in the shoulder blade. Even breathing deeply hurts. The doc suggested me Ayurvedic tablets. Someone pls tel me that this ain't anything serious.

History:
I have no medical history of pain and not worked or lifted anything heavy in the past few days. I quit gym 5 months back where i sometimes experienced lower back pain but nowhere near the blade.