Experiencing breathlessness for the past couple of weeks oddly enough with palpatations experienced this on three occasions. Not particularly stressed but very fatigued. Does the change in weather Ie damp etc or fatigue cause this?. Had lung function test last yr put o iron as said levels lo. Then taken off In March as upset stomach. Full bloods taken yesterday. Dry throat but no coughing or wheezing does anyone else experience this from time to time and what do you think causes this?.