I forget that I've also been "diagnosed" twice with "migraine without headaches" (believe it or not, it's in the ICD). It's obviously just another catch-all, but it's helpful to remember. The main difference from the
other vague neurological thing ("autism spectrum") is that it's cyclical, and episodes have a life of their own once they've been triggered (by things such as the weather). It gets more complicated when it gets chronic, but most times when it happens, if the offending triggers are temporary, then it's temporary too.
So "should I just wait it out and not do much anything meaningful or productive in the meantime?". I guess that, for at least a couple of days, the answer is "yes". It's just not very straightforward to realize that an episode is happening, since it's marked exactly by mental confusion and agitation, tiredness and sudden mood fluctuations. This isn't the first or second or twentieth time I realize all this. But I guess that each time that I reach the conclusion that "it's okay to be an invalid for a little while", it gets a little better.
I'm just not sure what to do about ADHD meds when an episode happens. I have the impression that they make it worse, but I've seen people saying that they even take stimulants to prevent migraines, and
stopping them is what makes things worse. So...

. More trial and error, I suppose.