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Are you aware of the secrets of your menstrual cycle? On any given day of your menstrual cycle, can you tell if you are fertile or infertile? Do you know what part of your menstrual cycle is best for... trying to becoming pregnant? avoiding pregnancy?


Serena is a Canadian organization which is composed of trained members that use and teach the Sympto-Thermal Method (STM) of Natural Family Planning (NFP).

Using the STM enables men and women to make decisions about their fertility: to plan pregnancy, to avoid pregnancy, or to space the birth of their children.

The STM works in harmony with the woman’s natural reproductive cycle, even during breastfeeding, menopause and other circumstances.

From the beginning of a woman's fertile life, until the end of menopause, the STM remains an effective guide for controlling fertility.
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