When I was at work, I was talking to a co-worker about maybe changing jobs. We were both sitting down in my office and I was at my computer. My ears began hearing my heart beat, my coworker said I was shaking and another coworker, an MD, asked me the month and date. I did respond but was told later that I responded as if I were a robot. In addition, I kept starting at the clock on the wall in front of me. I m thinking it my have been a hypertensive attack....or may be I m just going nuts! Please advise. Thanks. Oh BTW, I m a fairly fit, 51 y/o, female, no kids, non-smoker, drink socially (red wine).