I am a 44 year smoker, I have had 2 full weeks of anxiety ( of which I take zanex but a 30 day supply lasts me 1 year or more. Lately, needed them everyday. I have a 303 cholestral level, and am fearing that the fast beating of my heart, whether something has triggered anxiety or it JUST STARTS beating fast, I'm fearing I'm having symptoms of small heart attacks