I just returned from the local ER after waking this morning with sharp pain in my upper left chest area that was so severe I could hardly take a breath. Pain is not constant only when taking a breath. This started yesterday with same thing only it was in my middle left back area. This eventually subsided after several hours. ER could find nothing specific this morning but gave me shot for pain which is working.
Does anybody have any theories on what causes this? Worked out with weights pretty hard on Tuesday and did 20 minutes on treadmill Thursday but this didn't show up until Friday afternoon. Anybody got any ideas I'd love to hear them.