Hello, I have been having pain for the past 3 months in my upper left back between my shoulder blade and spine. Te pain radiates around to my anterior thoracic region. The pain usually lasts a couple of days before subsiding. Five days ago, the pain started again. This time, more severe and constant. I went into the er a couple of nights ago because the pain was so bad. They performed blood work, CT scan, chest x-ray, and EKG. All tests came back normal. I am at my wits end and do not know where else to turn. The pain is more prevalent while standing and sitting. The pain seems to subside when I lay down. The pain in my back feels like a muscle spasm, pressure, and sometimes a burning sensation.