I don't get migraines very often (once a year maybe), but the first aura was very strange not knowing what it was.

For me they start out as a bright point of light then spreads out into an expanding shimmering arc of rainbow colors. Sometimes the vision inside the arc is ok, other times it is kinda missing. The headache usually comes on as the aura is fading out. Sometimes I get an aura without the migraine.