Like most things there are many levels not just one (or cranked to 11 in your cases).
I'm a bloke and i get them occasionally. I dont get them bad but the visual pulsing with checker board squiggles in the visual periphery and the dull throbbing headache and nausea that can last from 5 minutes to several hours are so obviously different to a normal headache.
So if you are saying that because i am not incapacitated for several days it's not a migraine then you are wrong. Just sayin'.
I agree with you...there are many levels...but as you say you get the nausea, the weird visual thing and the headache...I've had migraines like that too that do not require me to go to bed but then others have been stronger.
But the poster above doesn't get the visual thing, the nausea and just gets a headache...and at twenty a month that is excessive and yet not one required bed...
To me that suggests it is something else but could just be a different form of migraine for sure...
The point is, whether they are minor or major...I hate them with a passion!