If I have been to a Cardiologist and had a

I have seen my primary doc, about palpitations, and he had an EKG done, which of course was normal + prescribed medication...which initially helped, but no more. I m in my early 30 s, I have seen THREE Cardiologists, the first two dismissed the palpitations as anxiety. The third had another EKG, which was normal, plus a 24 hr holter monitor, in which I had no symptoms that day. Then, finally I had in an ECG done, and the Cardiolgist, mentioned that I had a small leak in one of my heart valves, but called it normal . Well, additional symptoms I ve had included chest pain, and pain down my left arm...I ve had arrhythmias as well. I have told each Cardiologist about my symptoms, as well as family history of heart problems (mostly my mom), they shrug their shoulders, and say well it s normal , you ve got nothing to worry about. Each one has mentioned that I m too young for anything serious. Are leaking heart valves really normal, and who else is in the same boat?