I get heart palpitations when I laugh or when I breathe deeply. Any sort of pressure can cause heart palpitations for me in a way that my heart beats forcefully once or twice and it does not feel like skipped beat. My bpm stay the same. It feels more like a forceful beat felt through my chest. I also get them before sleep while I'm resting. I have anxiety disorder so I'm concerned if that is caused by anxiety or is it something more serious? Palpitations seem to be more frequent when I'm on my period. Otherwise, I don't have any issues.