Family Planning Using Calendar Method. This approach is based on the regular patterns of fertility that most women have and avoiding sex during the time of. The calendar method helps you predict your fertile days by tracking the length of your menstrual cycles over several months to create a fertility calendar.

The rhythm method is a form of natural family planning to help identify when a person is ovulating. This approach is based on the regular patterns of fertility that most women have and avoiding sex during the time of.