I think i pulled a muscle in my upper back below the left shoulder blade and it hurts. how do i fix this?

Exercise, ice, heat: Gentle range of motion, stretching and walking or any low-impact cardiovascular exercise. Pain can be relieved with over-the-counter medications like advil or aleve (naproxen). Ice for about 45 minutes will address inflammation and swelling, never apply ice to the skin, always over a towel or clothing. Follow this by heat for about 20 to 25 minutes to help soothe and relax tight muscles.