I have hormonal migraines and I'm in my mid 40s so the hormones are all over the place, lol. I've had the migraines for 10 years now (they've shifted to mostly hormonal the last few years). I've just started topamax the past couple of months and it's really been great. I had 3-5 migraines a week and now I get maybe one a week tops. it's also improved the intensity, making them much easier to knock out with otc drugs (aleve) rather than the prescription triptans. it does have side effects but I'd say it's worth it if you're really suffering from the migraines. I also take prozac (low dose).

if your migraines are very predictable and your periods are still rather predictable, i'd suggest the many different prescription Triptans like Imitrex, Amerge and others. you can take these to eliminate your migraine and depending on the triptan (each is diff so if one isn't working for you, try another), you can work and function.