Had a painful episode last year. My chest, my heart started beating terribly hard. Not fast, just so hard. It felt like Tyson was punching me from inside my chest. I called an ambulance when it did not go away and had to throw up while they were sticking the pads on for the ekg. It was bc of the pain. They took me to the hospital and I stayed for almost three weeks. They found issues with my heart but could not pin point the problem. The doctor in charge of me would have kept me longer but bc they were giving me my pain medication while I was there and bc I didn't want to be there anymore I asked her if I could leave. She did. I was with my husband in San Diego, CA at the time. He was working there for a couple of months and I was visiting. I have yet to see a heart specialist but have not experienced that pain in my heart since that time. I felt it in the hospital several times as well. 