What Causes Pain In Upper Back, Shoulder And Chest?

Hi there. I m an 18 year old female. For the past two or three years, I ve had upper back pains, shoulder pains, and chest pains. My back pains occur near the shoulder blade area to my spine. They occur when I m working out or sometimes just lying down. The pain feels like a lot of pressure is being placed on my back. My shoulder pains are right where the muscle is located between the scapula and clavicle, mainly on the left side. The pain occurs when I try to lift my arm up. My chest pains occur randomly, sometimes associated with anxiety attacks and other times, just random. The pains can be described as a stabbing and pressuring discomfort. I know an accurate analysis might be difficult to be provided given that there s no physical examination. However, I d like to know or at least get an idea of what might be wrong.