I mainly notice that I have palpitations in the evening, when I'm lying in bed and am more aware of my body. These can last anywhere from 10 minutes, to a couple of hours before I fall asleep. I also get them in the day time, or after I exercise. It's really worrying because I can feel (through my pulse in my neck) that my heart is skipping every fourth beat, and occasionally adds an extra beat to make up for it. Ectopic beats I believe they're called. As it makes me more anxious, they only get worse. I don't know whether this is a problem to take to A&E or whether I try to ignore it? I am also short of breath, and subsequently breathing fairly fast. Again - I am unsure whether this is related to the anxiety, or whether it's a physical defect with my heart.