Thirteen Moons: A Menstrual Cycle Charting Handbook and Journal and Spinning Wheels by Jane Harwicke-Collings
Thirteen Moons is a handbook and journal that teaches you how to chart your menstrual cycle and how to notice the changes you experience through each cycle. There is so much more to the menstrual cycle than the biology lesson given to explain it, in the same way that there is so much more to sex and childbirth than the mechanics.
Charting your cycle can reveal so much to you about yourself. Each cycle provides a woman with the opportunity to understand and read the messages her body gives her for any specific healing she needs. Each cycle creates the opportunity for as much spiritual growth and personal development that she could want. There is powerful transformational magic inherent in the menstrual cycle. All a woman has to do to connect with that potential is simply to be with what is happening, whether she's paying attention or not.