Really don't want to sound all 'anti-vax', I really don't, but picking up on what you're saying, you had the migraines after your jab, but you're blaming prior infection?
Timeline is as follows:
1) Before 2020 I had the odd migraine, like maybe one or two a year, and any memorable ones were quite clearly linked to hormones, eg pregnancy
2) In April 2020 I’m pretty sure I had COVID and then had a migraine like headache that lasted 2 1/2 months.
After a break I had one for a month.
3) This settled down into one or two a month
, clearly linked to hormone fluctuations.
4) these were getting better until I got confirmed COVID in January this year, and following this they took a level in badass with the whole predrome/aura/headache/postdrome thing, along with some other unpleasant symptoms that took 3 months to stop
5) the auras and pre and post stuff was getting better again but I had a particularly shit aura on Friday
So not anti vaccine at all. It kind of makes sense that if my immune system is reacting in a lesser but similar way to a vaccine compared to infection then it might have caused a bump this month. It might also be complete coincidence as these things are not linear anyway, and also I am approaching that age when these hormonal migraines are common. Correlation is not causation.
But even if it was related, I’d take Friday over the very real risk of the migraines getting worse yet again after a third bad infection.