Sympto-Thermal Methods (STM) emphasize the relationship between at least two of the primary signs of fertility (for most, this is the change in cervical mucus and the BBT). Whichever two primary signs first support each other, it is very important to make accurate observations, record them, identify the Peak Day of fertility correctly, and ...

Natural Family Planning (NFP) is the general title for the scientific, natural, and moral methods of family planning that can help married couples either achieve or postpone pregnancy. NFP methods are based on the observation of the naturally occurring signs and symptoms of the fertile and infertile phases of a woman's menstrual cycle.

A multi‑indexed method of NFP, Sympto-Thermal Methods (STM)* chart the primary signs of fertility (cervical mucus, basal body temperature, and cervical changes) as well as the secondary signs of fertility (breast tenderness, back pain, etc.).

Learn NFP is the home to learning the natural family planning STM fertility awareness method through a lifetime of fertility through classes.

The Sympto-Thermal Method (STM) is a natural and healthy fertility awareness based method (FABM) of family planning that makes use of a woman’s observations of her cervical fluid, basal body temperature (waking temperature)

In a Catholic context, it is often used to refer to multiple forms of moral NFP methods in line with Theology of the Body and Church teaching. STM (sympto-thermal method) is the specific method of NFP or a FABM that CCL and Liga use to teach to couples.

PeakDay STM Couple's Guide with practice exercises to learn the Sympto-Thermal Method. Mentoring with assigned FSI instructor and free fertility coaching for more support.

Natural family planning (NFP) is fertility awareness, which is simply knowledge of a couple’s fertility. It is a means of reading the body’s signs of fertility and infertility; applying this knowledge through the Sympto-Thermal Method (STM) is over 99% effective in postponing pregnancy.

"The Sympto-Thermal Method (STM) is a natural and healthy fertility awareness based method (FABM) of family planning that makes use of a woman’s observations of her cervical fluid, basal body temperature (waking temperature) and other biological signs (e.g., changes in the cervix) in order to identify the fertile and infertile times of her cycle.

Sympto-thermal Method (STM) is based on a woman’s observations of her cervical fluid, basal body temperature (waking temperature), and changes in the cervix on a daily basis. A woman records the characteristics of her cervical fluid secretions and monitors the basal body temperature, which rises after ovulation.