Hi I am a 44 year old woman and since november have been experiencing chest flutters in the centre of my chest, feels like I am short of breath but not, and a little lightheaded. I have been able to correlate some of it with perhaps the menstrual cycle, I think. I do not smoke, somewhat overweight but not obese, have asthma....when I get these episodes I become a bit agitated or tense because it frightens me. I drink one coffee a day and one latte a day.....thinking it may be related to hormones or even a thyroid issue?