Then I went on an estrogen
patch, then another one with a higher dose,
and then another still higher dose
and no difference with the migraines which were gradually becoming better from other treatments. So the estrogen may not be the cause.
But if I'm even a few hours late with changing the patch, my migraines become severe. Any change in the hormones can trigger migraines. If you're currently going through menopause, that could be triggering so many more.