I had my ablation two weeks ago. I was ill the next morning, didn't feel like eating normally for four days and had an attack of migraine every single day for eleven days, some were worse than others. I thought it was just me and I ended up in A&E on the fifth day. I was given Sumatriptan tablets. It was only on the eighth day that I googled "migraine after cathether ablation" and found that it happened to about 1-2% of patients. I also found your leaflet Bob and the fact that you mentioned migraine aura seems to show that it is more common than that. You say that "It results from the transseptal puncture needed to gain access from the right to left atria” but I didn't have that as I had a hole in the heart already, a patent foramen ovale I think it's called. The doctor said they hadn't needed to drill a hole through.
I think I will be alright from now on and I have had no atrial fibrillation since so that is good. Previously I had Afib for 24-30 hours at a time.