Hi, I have been having bad chest pains lately (it is like a sharp pain at the bottom part of my heart), I would also feel short of breath. This would often be accomponied by arrythmias or (and especially) heart palpitations. At first I thought it was just stress, but lately I have been feeling tired constently, I am also pale & nauteous & have head aches. Being only 18 I love sports! But the past week I litterally felt to weak to play. My heart would also get really sore. I am now ons iron defficiency pills. I completed my first warrior race today and am very happy to report that I had no discomfort in my heart as before whatsoever, BUT I am still constantly tired & feel physically weak. My muscles are like numb? Also, I can t help but notice this weird numb-like feeling in my left side chest? Should I be worried? Or am I just being paranoid?