What on earth is a migraine with an "aura"? I used to get what I would very much consider "real migraines" as a child. Would lay in bed shivering with this cri

What on earth is a migraine with an "aura"? I used to get what I would very much consider "real migraines" as a child. Would lay in bed shivering with this crippling jack hammer bashing into the (always) lower left side of my skull. Eventually the pain would get to the point where I'd get up, go to the bathroom and vomit; then within minutes the migraine would subside. As an adult I rarely get them, but when I feel one coming I know to take a couple of Advil to head it off at the pass so to speak. Anyway, what is a migraine with an aura? The only aura about me that I recall was my sisters telling me to shut the hell up from their bedrooms o_O