• Sensation: e.g. moist, sticky, wet, lubricative, slippery.

• Appearance or colour on soft, white toilet tissue:
  e.g. white, creamy, cloudy, or transparent.

  Fertile-type mucus may be slightly blood-tinged.

• The finger-test. Consistency may be described as sticky, thready or stretchy.

There may be a combination of two types of mucus,
e.g. cloudy, thready mucus with some transparent stretchy mucus.

The mucus possessing the more fertile characteristics should be recorded.

This is marked with a cross through the last F .

Remember that peak mucus day denotes the last day of highly fertile mucus (symbolised by an F), i.e. last day of wetness or lubricative sensation, when slippery, transparent, stretchy mucus is present.

Peak day is not necessarily the day of the most profuse mucus.

Peak day will only be known in retrospect. On the day following peak there will be a change to the thick, white, sticky mucus again, or to dryness.

Any additional signs (secondary or minor indicators) are recorded, for example one-sided abdominal pain, bloated abdomen, mood variations including increased libido.

Each act of intercourse is marked with an I or by circling the appropriate day.

If avoiding pregnancy the significant acts to be recorded are the last before, and the first intercourse after the fertile phase.