I have been suffering from Migraines all my life, honestly trying every 'cure' there is--prescription and holistic. It really comes down to a complete lifestyle change, but even then you cannot control all the chemicals in our daily environments. Anyways, last night I was at work and I started to come down with what felt like a PMS headache--one of those where you feel absolutely hopeless to fix because it is hormone related. I usually get these for about 3 days before my period and they clear up the minute I start bleeding. So last night when I told my coworkers that my head hurt, they--being Mexican--immediately offered up the remedy they grew up with: Half a lime with salt. I laughed at them thinking "Yeah right." but tried it anyways, and sure enough, after eating the whole thing and waiting a good 15 minutes, my headache was gone and I was fine the rest of the night and into this morning. It may have been a placebo effect, but it was so simple and there was no harm done. Couldn't hurt to try!
Also--use the netti pot to clear out your sinuses. Often times sinus headaches will disguise themselves as migraines. If the netti pot makes you feel better that's what you have.