Hi Tara,
I too suffer from migraines and imigran is my best friend too, but they run in the family - paternal grandmother, and father's brother are sufferers too. After 20 years of migraines, we are pretty sure mine are NOT cycle related. Makes them harder to predict, but it does mean that i can go 2 months without one so that's good.
Panadeine Forte is a poor substitute, but it does mean i can at least function to a degree. Hoping to start IVF this month, so i am really NOT looking forward to what all the IVF drugs will do to the migraines.
To answer the other questions...

Periods weren't ever that bad.

I suffer migraines (probably not hormone related)

I am not a vegetarian

My mother had no probs that she knew of.

Never had kids ... yet

I've never really been much of an athlete, but i try to walk every day or so - that's only been in the last few years.