Ive been experiencing palpatations for at least a week now. It does feel like it's going a bit faster than normal but it's more a pounding. To anyone who's experienced it how long does it normally last when it does happen? I have read it only should last for 30 seconds but mine seems to go on and on. Every time am sitting down or lying down it does it and it keeps pounding until I get up. Is this normal? I have an appointment tomorrow to see gp but I'm just curious. I don't have any pain with it maybe slight shortness of breath sometimes. It's getting on my nerves more than anything.