It would be very unlikely that this is a result of the catheter insertion.
Does it feel like nerve pain? The artery where they insert the catheters in the groin area are right next to the femoral nerve. It is possible that they irrated or nicked the nerve. After my ablation I had some neuropathy and shooting pain in my upper thigh area. It did go away, and I was told it was the nerve being irrated. I would let your doctor know that you are still having pain in the groin area. It may turn out that it has nothing to do with the ablation, but you never know.
I checked with my doctor he said there nothing to worry about. He didn’t go as far to say that he nicked a nerve. Apparently you where right thank you both very much.