It has been hurting in the middle of my chest towards my left all day, might be my heart. I have no history of heart problems, but it s not the first time it happens. it hurts breathing or not, it stops for a bit then continues throughout the day. Twice my left arm had hurt intensively, but not together with the chest pain. Twice ice-skying it hurt in the same spot as well, again, not the first time, i have not payed a visit to my doctor in a long time, about almost two years....i never felt the need to, school and work keep me busy. What does this mean?