I have very simillar symptoms. I use to have different panic attacks symptomps - stronger or weaker. You just need to understand them a try not to let anxiety develop with symptomps - snowball effect. From time to time I had irregular heart beats like you described. Like one beat missing and next one very strong one. After years I got this more and more often so I ended up at ER. Had some tests afterward at cardiologist - got EKG holter for 24h (2 times within 3 month) - they locolized those irregularities and cardiologist said its quite normal - even small kids have it. Some people dont know they have it as they dont feel it as we do. And anxiety doesnt help that at all. My psychoteherapist told me that this should not be connected at all. Even cardiologist said its purely physiology. Some cellcs on heart just send wrong info to other cells to shrink heart muscle. Both told me its not dangerous at all - but got prescribed 1,25 mg of betablocators - dont think it helps much. I personaly feel, that it depends on how emotionaly stressed I am. (most of the time) - And I think It has something to do with our neuronic system - but Im not doctor:) note: I do not take any medicaments on my anxiety - only regular psychotherapy.
It's possible you're having irregular heart beats. It's also possible you just feel like you are, which is much more common with those of us with bad anxiety problems. Nobody here can tell you if you're actually having his problem or just feeling like you are, but we can tell you that your biggest problem is probably your anxiety and so what are you currently doing to address that problem? If you really do have a problem with an irregular heart, of course you need to see a doctor because just because you have anxiety doesn't mean you won't get actual health problems, but I've been on this forum a long time and have suffered with anxiety for a lot longer than that and while some people do in fact have heart problems, the vast majority of those with anxiety who think they have them don't have them. It just feels like it.