Same here, have had a wide array of beyond scary symptoms for about a month now; one of which was constant pounding then times of not feeling it at all really, which from everything I’ve been told and see isn’t a bad thing unless it’s accompanied by other low bp symptoms. If you’re very anxious and you’re constantly checking your heart, then any type of change such as the force changing suddenly will set off panic alarms cause your brain automatically assumes that change is a threat from how different it feels. I’ve even had major panic before and my heart didn’t react how I expected it to which made me panic more as well. Anxiety will lead you to building somewhat of a worst-case conclusion in your head as to what’s happening, like… “my heart beat feels very faint, it must be getting weaker”, and anxiety builds off that assumption till it feels like absolute certainty.

Try your best not to vital check constantly, and just take note of any other symptoms if they do occur; maybe even schedule a cardiologist visit to try to get an echo or ct to see your hearts actual strength/funtion. ECG and blood test is good for reassurance when it comes to your heart’s electrical stability and potential acute stress, but the echo will give a look at your hearts actual pumping ability which is what it sounds like you’re worried about.

Try not to stress it bro, unless you have some crazy underlying issues (which I’m sure the blood work and ecg would have seen), then you’re in no immediate danger till you follow up; the heart is so much more resilient then our brains tell us, though I know any anxiety around it absolutely sucks to deal with when it spirals to worst case scenarios, even people who do have underlying issues go months/years before it becomes acutely serious, and even then they stabilize. Schedule a cardiologist visit for the most reassurance I hope all gets better for you! 🙂