Hi @Egghead68
Cutting and pasting my original post below:
I got back to a pretty much normal heart rate when resting (60-65bpm) quite quickly, but it shot up whenever I moved. Walking up the stairs caused my heart rate to go up to about 130bpm, and a ten minute walk on flat ground was 150bpm+. I'm pretty fit, and so there was clearly something wrong. Also, I have struggled to fight off the symptoms of this wretched virus - eye infections, occasional breathlessness, and the weirdest one is the sense I am breathing through peppermint (or cold air) when I take a breath.
After a couple of late night visits to A&E with sustained tachycardia, which wouldn't settle for several hours, my brilliant GP organised a referral to a cardiologist. She did a 24 hour ECG and a heart ultrasound. The ECG showed a huge variation in heart beat, but was otherwise normal, and the heart ultrasound was also normal. Her diagnosis is a post-viral condition - it was as vague as that. She offered plenty of encouragement that the structure of my heart has not been damaged and I will get better. She told me it is not unusual after a virus, and with some people it may take days, others take weeks, and some take months.
She prescribed a very small dose of a beta blocker as a short term treatment, and that has really helped, although I was very reluctant to take it. Heart rate is back to normal (even on the low side), and I am able to exercise again (without my heart rate shooting up). The horrible jittery feeling I had is gone too, and the multiple palpitations where I felt my heart literally trying to bounce out of my chest have largely stopped. Interestingly, the cardiologist said she had seen a number of people recently with very similar symptoms (some of whom had been tested as CV19+, others, like me, just had a history of symptoms). Now I just have to get rid of the other symptoms of this wretched virus which keep trying to come back...
Hope that helps reassure - that said, if you have symptoms you are worried about, please do see your GP rather than just rely on my experience.