Heart Palpitations without chemo - could it be a side effect of AIs?

I wore a holter moniter in 2017 (way before bc) because I felt palpitations. I wore it for 24hrs. GP sent me to cardiologist after that because an ectopic beat had been picked up. He made me wear another, more advanced, holter m for 7 days. Every time I felt anything in my chest I had to press a button on the monitor. It had a little screen. When I went to see him for results he said another ectopic beat had been picked up but had regulated itself. I didn’t want to do a CT scan with contrast, so instead I did a stress test. He told me I had SVT and released me, saying he was happy with my results and I didn’t need medication. So they def pick up these beats, but it may need to be worn longer. You said you felt them the whole time you wore it so should be registered. I had a very big panic attack on day 5, when I asked him about it he said it looked perfectly normal 🤔. Good luck, I hope it settles 🤞🏼