FABMs

FABMs is an acronym that stands for Fertility Awareness-Based Methods. These methods are natural family planning techniques that involve tracking a woman's fertile window to either achieve or avoid pregnancy. FABMs work by identifying the days in a menstrual cycle when conception is possible. This is typically done by monitoring various biological signs of fertility.

Commonly used FABMs include the symptothermal method, which combines tracking basal body temperature (BBT) and cervical mucus changes. The calendar method, also known as the rhythm method, relies on tracking the length of previous cycles to predict the fertile window, though it is generally considered less effective than methods that incorporate daily physiological signs. Other methods focus on cervical mucus changes alone, such as the Billings Ovulation Method.

FABMs require a commitment to daily observation and accurate recording of fertility signs. When used correctly, some FABMs can be highly effective at preventing pregnancy, comparable to other modern contraceptive methods. However, effectiveness can vary depending on the specific method used, the user's ability to follow instructions consistently, and individual cycle regularity. FABMs do not involve hormones or physical barriers. They can also be used to identify the fertile window for couples trying to conceive.