I'm a 55 year old white male. Today while under stress in my job my heart rate jumped up. a few minutes later i returned to my car seat sat down and had slite chest pain then a great deal od pain in the center of my back in time to my hearts beating. I returned to my office and took a blood pressure medicene I've been on for 2 weeks and 1 adult asperin, 20 minutes later I was totaly fine.