question: HI I am a 41 yr old female.  Ive been dealing with some chest pains and shortness of breath for the past 3 monthe.  Two days ago something new has started.  Under my left breast I am having a fluttering sensation.  It doesnt last long but is happening more often.  This is in the same spot where I used to feel a sharp pain.  Now it is a burning pain, sometimes and the flutters have started.  Is this heart related or could it be muscle spasmsS