Chest Pain

Ok, I had been very clear with everyone so far that I had "pressure" not "pain" when describing my symptoms.  But today, while driving one of my daughter's friends home, I had chest pain.  I was driving....why is everything happening when I am driving????   It last 30 to 60 seconds....radiated up to the top of my chest from the center and down my arms...especially my right one.....I in fact feel that arm is a little weak now.    Let's hope it does not happen again......