I'm feeling a bit worried because every time I move my left hand, I get this sudden cramp in the center of my chest. A couple of years back, I had an ECG, an echo, and a TMT done, but everything was normal. I also had an endoscopy, which only showed H. pylori. This pain has recently started again, and I'm not sure what it means. Could it be related to the H. pylori, or should I be concerned about something else?