In my time on fora dealing with ablation and what follows, about four years now, I usually see people report an elevated HR, often as high as 90. Those who respond tell them that they, too, had an elevated HR, but it returned to normal, or near normal, in as much as one full year. Some say it's just a few weeks, often by the end of the blanking period.

Your HR is technically in the bradycardia range (< 50). Your HR isn't that much lower, and is probably nothing to worry about. What may have changed is your Q-T interval, which should be determined and dealt with, but this is usually more to do with medication. Also, if you you are still on diltiazem or metoprolol, those are the most likely culprits, and you should seek an adjustment from the cardiologist. If you're taking 25-50 mg BID (bis in die, or twice daily), you might need to take only 12.5 twice, or none at all to see if you're stable and go off metoprolol permanently. Some cardiologists and electrophysiologists want their recently ablated patients to remain on flecainide or something else for a few weeks as well, but maybe you should not be on it...if you are. Again, consult your cardiologist.