Weekly dizzy spells

CJ

The last four Sundays I have woken up so dizzy I can barely stand. This only happens on Sundays and has happened every Sunday for a month now. It lasts several hours and is accompanied by nausea.

I have a history of morning migraines so it might be migraine related, but I don't know what I could be doing differently to only/always have it on Sunday mornings. (I don't drink, so it's not a hangover lol). Any ideas?