laying in bed I felt an electrical shock in the left side of my chest about 3-4 very intense shocks as you would envision lightning. Should this be a concern. 42 yr old female, no real health concerns, haven't had a physical in a long time. have been feeling a sensation of squeezing in my chest same location for several months on and off. 58 yr old mother just had double bypass this past july. Should I be concerned?