Low blood pressure, normal ECG, normal chest x-ray... yet oh my heck, I'm terrified. You see, I had anorexia nervosa when I was eleven and I currently have an underactive thyroid... which causes heart failure, funnily enough. I've just been scaring myself all weekend. I've been feeling weak, fluttery and unwell since Friday... short of breath... heart palps... I'm a vegan, and my Dad thinks I'm ruining my health and I thought, maybe he was right. So I ate 2 boiled eggs today, and a cod liver oil tablet. Also trying to eat at least 2000 calories today... I usually eat less. I'm so ill. My doctor is very busy. I can't speak to them until Thursday. I basically always have these weird fluttery feelings in my chest, and heart palps... no real pain, unless I think about it for long enough... but my anxiety is so, so bad. I keep thinking, anxiety... symptom of heart failure... please can somebody help? I'm exhausted but I'm scared to go to sleep. I read about a girl whose heart stopped in her sleep. I have heart burn, diarrhoea, incredibly gassy... and I keep thinking I'm about to die at any second. What if I am? An ECG doesn't even test for HF, does it? Is this really just anxiety? My parents told me it is. And to be fair, since I've been feeling this way for three days and nothing has happened yet... but I just keep thinking, "I'm going to die if I go to sleep, I'm going to die if I walk too much." Help! Please!