You know, I almost always had little cyclical headaches in my 20s, but not really migraines. When I had a Mirena and my hormones disagreed with it, I did develop migraines, sometimes painful and eventually just auras but no real pain. I wonder if these slumps I'm falling into are the same as migraine auras, only different from how I experienced them before. I do get a little pressure in my head, never any pain though. If so, I don't know what to do about it now, removing the Mirena fixed my problems overnight back then. Ah well, this body will find equilibrium one of these days.