This
section provides information on observing, recording and interpreting the indicators
of fertility. When a combination of indicators is used, this is often called a
multiple indicator approach. The method used here is the sympto-thermal method,
in which temperature charting is combined with observation of the cervical mucus
symptom. Checking for changes directly at the cervix is optional. Other secondary
or minor indicators of fertility may be observable as additional signs.
With time and experience
the fertility indicators can be used to determine the fertile and infertile
phases of the cycle. This knowledge can be used for planning or avoiding pregnancy.