I've suffered with migraines for a couple of years. Floaters, nausea and then 45 minutes later the worst headache for and hour or two.
Recently I've found that if I get reflections on my glasses windows, or eyelashes which is quite a few days the nausea is overwhelming the same as the start of a migraine but it's not. And passes in 5-10 minutes, I think it's psychological but does anybody else get this?