I am trying to figure out what the pain is I am having. It is located on the left side of my Back, chest, and left arm. No it isn't my heart. Been to dr. while having steroid treatment about 3 weeks ago. Heart is fine. This is PAIN!!!! and it is moderate to severe. It takes my breath away at times because it hurts so bad. It is kind of a presure and pain at the same time. It is driving me crazy. Vicodin seems to take the edge off a little and the dr started me on Gabapintine again so we will see if that helps. I am also haveing a MRI of my spine done.