What is wrong with my shoulder? It’s been hurting for

Patient: What is wrong with my shoulder? It’s been hurting for about 3 weeks. And no I haven’t done anything injury related with it. I also do not play sports.

Symptoms: So about 3 weeks ago my shoulder would start hurting real bad whenever I was sleeping. The ironic thing is I wouldn’t even be sleeping the shoulder that was hurting. So my shoulder would start hurting in the middle of the night when I was sleeping on the other shoulder. I can’t lift heavy things without getting pain in my shoulder.

Doctor: