ICD pacing irregularities

[Lurganspur]

Hi all

So I got my annual hospital ICD check yesterday &a couple of months ago it had picked up my heart was going to fast & acted to slow it down (it wasn’t) & then tried again a few mins later, I never felt anything but was told it had read something that wasn’t actually there, it hasn’t happened before or since 🤷‍♂️ so was just wondering if anyone else had this happen & if I can ask what happens next ?

Thanks again