I had a cardiac catheter ablation last week , I had another SVT episode, should I be worried?

Last Friday I had a cardiac catheter ablation to get rid of my SVT. The doctors successfully found the problem area and they told me they were able to get rid of it. Today (Thursday, almost one week later) I had another SVT episode when I was babysitting. It lasted for about 40 seconds and it wasn’t as bad as usual but it was SVT. Should I be worried that they didn’t get it or is this maybe just a side effect of the surgery or maybe the tissue isn’t healed or something like that.

Age: 25
Medications: CBD pills for anxiety
General Information: Nothing other than I’ve had SVT for 3 years now and it’s been exactly 1 week since I had the surgery.