A little caffeine, as suggested above, may be something to try.
One caveat though. Migraines are believed to have two prominent phases, one is vascular constriction, the other dilation. My migraines were without pain, but they were migraines nevertheless, and subject to being triggered. Mine were totally visual, blind spot and colors, known as a scintillating scotoma, and were caused by the early stage of migraine, vascular constriction, in the visual cortex of the brain (or that fed the visual cortex).
Some doctor got the bright idea for me to use Cafergot at the onset of the migraine. I had the worst ever visual migraine when I tried it. The drug has caffeine and ergotamine, both cause vasoconstriction (helps to reduce the dilation phase and thereby reduce or prevent the pain associated with migraine).
Not everyone will benefit by caffeine use in conjunction with migraine.