I have been having occasional palpitations for a while, which seem to go away for days, sometimes weeks and then reappear with a vengeance. I am havign a particularly bad day with them today - on and off the whole day. Other times it is only first thing in the morning then subsides. The only pattern I am beginning to notice is that the last time I had them this bad was almost exactly a month ago when I had them for three days straight. No chest pain associated, just a racing heart which interferes however with everything I do. I can't concentrate on anything else beacause of this fast pounding or fluttering. Has anyone else had this? Has anyone had this assoicated with certain times in their menstrual cycle? I am 34 years old. Should I be concerned? Any information would be appreciated. Thanks.