Afib is serious business so this is not medical advice and I do this because I’ve already been diagnosed. The easy way I can confirm an episode is with my Accumed pulse oximeter that clips on your finger and measures oxygen. It also measures heart rate and has a waveform that shows your heart rhythm kind of like an EKG. I can always feel when I go into afib but then I monitor with this device. The oximeter just confirms it for me by showing an absolutely chaotic waveform pattern as well as a high heart rate. It also shows if I’m only having PVCs with an irregular but consistent wave pattern. On the other hand, my BP monitor only indicates if my heart rate is irregular but not why so that’s not helpful. I have gone to the ER a couple times when I was in afib and it was confirmed so I know what the afib pattern looks like. I’m sure others have better tech stuff but this is easy and enough for me to monitor and easy to carry with you if needed. I bought it to monitor my low oxygen level but this is an added benefit. When in afib the waveform goes back to normal (usually overnight) before my heart rate does (slowly over typically 30 hours). My BP usually goes down low so I get dizzy when I first stand up and I’m very weak and fatigued especially day 2. The device is inexpensive ($20-$30) on Amazon. Mine has a thin waveform line that is easy to ID. They vary by brand. It doesn’t document history like other devices might but you can do that manually. Maybe you already have one?