I don't know what brought it on - I've no stress nor was in a bad environment - was merely kicking back having a discussion. All of a sudden I get the domino effect - Right side chest pain, 2 seconds of dizziness followed by some crazy ass fear and the rapid heart rate. He flips me a pill, which I later found out was 5mg Valium. 20 minutes later it took full effect. It was absolutely serene. I thought to myself, "All those other times where I've had to wade it out when I could have had this and calm down quickly".