It is assumed that anyone continuing to read this section, is already familiar with The 'Indicators of Fertility' A multiple indicator approach, generally a combination of temperature and mucus or sympto-thermal approach is the most effective method.
Instruction is required in how to observe and record symptoms accurately.
It is important to be aware of factors which may affect the cycle or disturb the recordings. Some women will be more affected by common disturbances than others. With appropriate support most women will learn to define their limits of fertility while recognising the effects of disturbances on the cycle. The book 'Fertility' includes a chapter on 'Factors affecting the menstrual cycle, which looks at the effects of stress, illness and medication on the cycle. The guidelines for avoiding pregnancy are included here for information.