My palpitations have changed and now they bang in the hollow of my throat. I feel so awful when they strike and I'm convinced that I'm going to drop dead.it just happened a few times in Asda and I just managed to claw back from a panic attack starting. I don't know whether to go to the hospital. I've had all the tests and I'm assured they're benign, but they feel so dreadful that I just KNOW it's something more severe.im terrified. I also will be giving birth imminently and I know my heart will not cope with the strain.