I have had a few times here recently where I get a fluttering feeling in my chest and it kind of takes me breath, its not painful just alittle scary because it feels so odd. I get it mainly at night when resting, or sometimes when driving. Didn't know if this was caused by anxiety/stress or if any of you have experienced it before? I am not too alarmed by it, it has just made me wonder and obviously be anxious. Thanks for any replies!