I am 14 years old and having heart problems. I've never really had any problems with it before but I have always had an abnormally fast pulse. The doctors never saw anything strange. I've been having frequent heart palpitations for the past 2 years. Recently (about the past week) they have gotten more frequent and much more painful. I've actually had long-term effects this week. I've been feeling weak, tired, and dizzy. In the past 40 minutes I've been having heart palpitations and extreme chest pain. At first I was panicking, which caused me to inhale deeply and sharply, which caused my chest to hurt more. It seems I can't laugh, talk loudly, or breath deeply without feeling some kind of reaction in my chest. My mother said she was going to schedule a doctor's appointment soon, but she is not very reliable. Do I need immediate attention, or will I last for a few more days? Also: I could see the school nurse tomorrow if it would help.