I am 70 years old. For most of my adult life, my heart has skipped beats. As I have gotten older, there are times when it is more pronounced. Often I can go months without even noticing it, then other times, for a few days, it will cause the fluttery sensation in the chest and I feel a shortness of breath. This usually goes away and then returns again when I am overly tired or under more stress. I m used to it, but wonder with my age if I should be concerned now.