Hello! I have a question about a possible heart problem. As a teenager I was diagnosed with mitral (?) valve prolapse, which was causing some discomfort. I was told I would outgrow it and it never bothered me much. I am a 30 year old, generally healthy woman, my lifestyle is rather stressful (due to job). In the last year I have been getting episodes of heart palpitations (heart rate drastically increases for no apparent reason, feeling very tired and also having a tired feeling in the chest/heart area - I guess it could be pressure, it's just a feeling of tiredness, also in the left arm). 2 months ago I had a surgery due to rapture in which I lost 400ml of blood. I am taking Iron as a supplement and still feeling very tired most days. Could this be a heart problem that needs immediate attention?