Hm. Well, first having a physical and making sure the heart is fine is what should be done first. You sound like you've consulted about this with your doctor, are having a cardiologist do a work up and find out if this is cardiovascular related. I would guess it likely is not. And hopefully they can rule that out. But, you have to just that. Make sure your heart is healthy. Once you are cleared, it's time to get serious about your anxiety. Feeling every pulse, beat and tingle in our body at this heightened level is a sign of anxiety and health anxiety. https://adaa.org/understanding-anxiety/related-illnesses/health-anxiety First make sure nothing heart wise is going on and go from there. Let us know!