It is on the left side of my chest, radiating out, down my left arm and up my neck
into my jaw
. Sometimes its the middle of my chest
, sometimes its my breast area and to the left
of my breast. Occasionally my left arm will feel numb as will the left side of my face (only happens very occasionally). Usually it will start with no real cause, but i have felt it start sometimes when i get scared of something or nervous.