for the past few days now i have had palpitaions, a few times throughout each day, iv suffered with these in the past and had an ECG, the ECG told my doctor it was slightly slow but otherwise normal, but this was when i was 14, im 25 now, at the minute i can feel a dull ache in my chest, and i often get pain under my left arm and a feeling of weight on my chest, im getting dizziness, short of breath, ridiculously tired, ringing in my ears and generally just feeling miserable because of it, now iv suffered with stress for years on end and get very easily stressed! not sure if this is the cause but the only thing im stressing about at the minute is this problem!! i noticed when i was 12 after a physical education lesson at school that my resting heart rate was much lower than everyone elses! never said anything tho as at 12 i was abit too scared what it could mean! anyway as i said im now 25, i have a 2year old who keeps me on my toes, do excersive when i get the chance, i eat well, sleep well etc i suffer also from constant aneamia which with they diet i have i cant really understand and my doctors just fob me off with iron tablets tho i say i eat right! my resting heart rate now is 52, which for someone like myself i know is not good, if i was an athlete maybe but im not exactly that active, could anyone maybe provide any insight?? pleasssse answer someone, as this is starting to worry me now x