Here’s a great article from the Cleveland Clinic site that explains the link between the sensation of heart palpitations and anxiety
https://my.clevelandclinic.org/health/diseases/21677-heart-palpitations-and-anxiety (Heart Palpitations & Anxiety: Causes, Symptoms & Treatment)
If you have not yet explored Claire Weekes work, I highly suggest you seek out a book. She describes the sensations you have, frequently in her books as the sensation of anxiety and explains how to accept instead of push away or fear it (and other physicality of anxiety). By all means get things checked out but also try embracing the idea that these are harmless sensations, and if we simply feel them without judgement, they can pass quickly. Be curious, try experimenting with your reactions to the sensation and use some self compassion. I tend to say to myself “this is anxiety. This is what anxiety feels like, and I’m ok right now” then I just stop thinking and start feeling it. I used to get heart palpitations, feel faint, get dizzy etc. It was explained to me that this is simply a nervous system reaction to a perceived lack of safety and part of a common set of sensations that can happen with a disregulated nervous system. I was never afraid of the symptoms but found I would get annoyed and embarrassed. I stopped judging them and they have pretty much gone away.
