It's a good idea for all women to keep a record of their menstrual cycles. Whether you want to get pregnant or avoid pregnancy, a menstrual calendar can help.
You can use a regular calendar, or make notes on a piece of paper. You can develop your own code, but some commonly used abbreviations are: "S" for spotting, or very light irregular bleeding; "B" for normal bleeding and "H" for heavier bleeding
The length of a menstrual cycle is counted from the first day of one period to the first day of the next period.
Take your menstrual calendar along to any medical appointments where you may need to discuss menstrual issues. Your health care provider will thank you!