Your electrophysiologist wants to be cautious because he/she had to make more lesions, in more areas, than he had expected. This may make your heart cranky, and I think you should not be surprised, OR DISMAYED...to find yourself having a few little episodes of arrhythmia in the next two-to-four weeks. The literature says that some patients have a recurrence of AF in the early weeks, which is NOT a sign of failure. Later on in the blanking period, episodes of AF might mean more ablation is necessary, but it's a wait-and-see type of thing. The handouts I received when discharged warned me not to be unhappy if I got some short runs of AF in the first week up to three months, and that is what I mean to pass on to you.

Your EP is conservatively keeping you on metoprolol and Flecainide to help your heart stay calmer while it deals with all the burning or pulsed field disruptions, depending on what you had done. I think you will be encouraged to eventually begin to taper off both drugs about four weeks prior to the Holter monitor which comes at about the 10-12 week mark to see if you are free of arrhythmia. I'm not sure about this, but this is what the convention is to ensure your heart's true nature or state is accurately assessed by the Holter, and that the drugs are not actually masking an under-corrected arrhythmia.

The medical community currently states that a heart rate (HR) lower than 60 BPM is 'bradycardia'. Some in the cardiac field feel that this number is too high and that a BPM of 50 makes more sense. But for now, your lowest resting HR might be classified as bradycardia. It's not dangerously low since most healthy people have HRs in the high 40's when they are fast asleep, for example, or have been seated and calm for more than 15 minutes. My own resting HR used to be 38 when I was a competitive runner, but that was decades ago. The important thing is to keep an eye on it, and to not let it get so low that you become dizzy and want to faint, especially when getting out of bed or up from a chair...be careful and monitor your BP over the next couple of weeks to see how it goes.
Of course none of what I say is to be taken as medical advice or knowledge: keep in close contact with your medical team about any worrisome developments.