Left shoulder pain near bicep area.

I'm getting left shoulder pain near bicep area since a year. I have developed with anxiety due to lockdown and before that I was very healthy. Recent days I was getting daily loose stools once a day and checked with local cardialogists and cleared that I have only anxiety disorder. My cholestrol is under control and triglycerides along around 230. I'm having left shoulder pain these days(since a year) near bicep area, sometimes it will subside without any treatment. Today I'm getting same pain which is dull and intense. It's really scary. The pain comes without any physical activity. I'm really worried that it's cardiac related. Please help me. I was very heathy before lockdown doesn't have any issues. This lockdown ruined my life. Please help me on this.