I had the same thought Wendy did. Costocondritis.

I was diagnosed with it about 6 years ago. I also went to the ER. I went through EKG, had a treadmill test, was sent to the hospital where I was diagnosed with some CAD, ischemia, and was put on meds which still didn't help.

It took them 2 or 3 years to figure out that I also had costocodritis. My Dr. gave me triggerpoint injections in my chest area to calm it down, I later had to have surgery under my arm to have 3 inches of muscle taken out because of TOS, it was also contributing to the chest pain.

Every once in awhile it starts up again but not near as bad as it was. I had trouble finding a way to sleep at night because of it. I would cry from the pain so I know what you are talking about.

Hope you get it calmed down soon. I know how it feels.

Ada