This is NOT normal. My leg pain lasted about 2-3 weeks. Duringthat time, I walked with a noticeable limp with gradually subsided. As I unstand it, there is a nerve that runs very close to the insertion point of the catheters. If care is not exercised, the nerve can be damaged. As Jerry suggests, I hope you've discussed this with your cardiologists or electrophysiologist. I guarantee that if you have not, they will disavow any actionsmthat mqy have caused the possibly permanent injury.
After my first ablation, I did have a deep ache just on my right side even though they catheters went up both sides. It lasted for a few weeks and it hurt to sit or walk. I think they may have bruised a nerve in there while they were poking around but it did ease up. The pain went from the groin to the knee.
I think you should talk to your doctor about this. It shouldn't go on this long. Perhaps there's some kind of physical therapy they can do in case there's a muscle issue causing pressure on the nerve. My husband has gone through that with his sciatic nerve.
I hope you have discussed with your doctor.
I have never had an ablation but I have had two heart catheter examinations and neither caused me any leg pain, even on the first day. By day two I had to look for a small mark on the leg to see evidence of the work having been done.
Of course, my exam required the catheter be in my heart for only a few minutes. I was fully awake on the second, and best I can recall it took no more than 10 minutes.
Hope you get some experience input, but I think the answer is you situation is not normal.