I just started experiencing this about a week ago and it has not gone away. I also get light headed to the point of feeling like I am going to pass out. I have never been a person to stress out about too much. Can this truly be anxiety? As I currently type this, my chest feels very heavy and I am dizzy. I wore a holter monitor for 48 hours last weekend. I haven't met with the cardiologist yet, but they did say they would call immediately if something odd turned up on the monitor. I keep thinking in my head that maybe it has to do with a clogged artery in my heart?? I have no idea--never experienced anything like this before in my life. It really scares me. I just want it to go away.