I have pain on my left shoulder blade that feels like a bruise when touched and just hurts when left alone. do i need to see a dr right away?

Rest and ice: Pain and tenderness is often from musculoskeletal causes. A pulled muscle or trauma to the area would have to be considered. Associated symptoms such as chest pain or pressure, shortness of breath, pain radiating to the neck or left arm would be more concerning but would be uncommon to cause tenderness over the muscle. A trial of over the counter anti inflammatory medication and rest may help.