Treatment For Shoulder Pain And Loss Of Strength?

I have NOT had a recent injury. I do NOT repeatedly move my shoulder in the same way on my job or in a sports activity. I have NOT had shoulder surgery or other treatments for my shoulder. The pain started suddenly. 2 days The pain does NOT travel from my shoulder to other parts of my body. The pain is worse when raising my arm above my shoulder. I have NOT noticed a loss of strength. I have NOT lost mobility for doing things like putting my hand in my back pocket, combing my hair or putting a coat on. It does NOT hurt when I lie on my affected side. My shoulder feel like it could pop out of the socket or there is a clicking sound. I hear a clicking sound when I move my shoulder. My shoulder is NOT tender to the touch. I did NOT have neck pain before I had shoulder pain. The pain is NOT worse when I move my neck. My biceps does NOT look funny. I do NOT have numbness in my fingers. I am left handed. If I move it in a curtain way it pops and hurts. It doesn t hurt much but I m still being careful its been 2 days and I woke up with it like this. The night before I slept on that arm like all night. I haven t done anything really physical. My pain has lasted .