Hi, I am new to the forum. For the past five/six months, I have been feeling breathless and often wake up gasping for breath. I also suffer from dizziness when rising from lying down to sitting up or from sitting to standing. My bp is very low bp (60/40) and my pulse is low too (between 40-50 at rest) and I am not fit at all!. I can hardly walk or carry out daily chores without having to take breaks, and if I go along the road to the shop, my pulse races up to 160 beats per minute. My legs also feel so sore and heavy when trying to climb stairs despite being more underweight. My doctor has referred me for an ECG and echocardiogram. Has anyone had similar symptoms, eg feeling exhaused, breathless, very low BP and resting pulse? And, if so, what caused it? The doc also noticed that my fingers and toes are 'clubbing' and I have lost weight over the past few month, unintentionally. Thanks for reading.