It seems to be that some of the ladies here are taking BCP’s that are causing headaches. Have you all considered other methods?
I am a huge promoter of Fertility Awareness Method (which uses basal body temperature, cervical fluid and cervical position to ascertain fertility). Some people refer to it as Natural Family Planning, and devout Catholics use it to avoid pregnancy. It is NOT the Rythym Method. FAM combines NFP with the use of condoms or a diaghragm, should you wish to use them. It can be used to achieve or avoid pregnancy and has about the same effectiveness as the Pill.
After reading the book Taking Charge of Your Fertility, by Toni Wechsler, I became really mad about how OB’s hand out BCP’s like they’re candy without educating women about their own bodies’ amazing fertility signs. With the use of a chart and an inexpensive basal body thermometer, you can figure out a TON of information about your body, INCLUDING charting headaches and seeing if there’s a correlation to your period, foods eaten or moods.
I agree with the book, which argues that the reason women aren’t educated about their bodies is in part because BCP companies aggressively target OB’s for their advertising, as well as women themselves. I mean, why teach women about a cheap, empowering, safe and effective method of birth control if you can make tons of money off them instead?
Seriously, guys, read this book, even if you’re a committed Pill/birth control user. Toni writes from a more feminist, though far from dogmatic, perspective. The pictures are FASCINATING, and the information is great to have. Those of you with daughters who are coming up on their teen years will find the whole period/pad/tampon discussion will take on a whole new meaning. It could end a ton of ignorance that seems to saturate teen girls’ knowledge about their bodies.
And if you’re wanting to achieve pregnancy, this book is simply incredible. I used it to get pregnant with my daughter, and the information worked the very first month!
For those who struggle with infertility, it cna be a great tool for your doctor to have before you begin Clomid or any other more aggressive treatment. Either way, you’re sure to learn tons about your body, and you’ll become the lady who everyone goes to for questions! 
If anyone has questions, you can PM me or simply ask openly here on the forum.