You can assume infertility at the end of the fourth consecutive day (6:00 pm) following your Peak Day.
The Peak Day is the last day you see or feel cervical fluid of wet, slippery, or egg-white quality. Important is a definite change to a lesser quality of your cervical fluid.
When using 'FAM / NFP,' Lily shows infertility at the beginning of day five to cover the time between 6:00 pm of day four and 12:00 am of day five. When using 'NFP (AG NFP),' Lily shows infertility at the beginning of day four to cover the time between 6:00 pm of day three and 12:00 am of day four.
Note: Concerning the Temperature Shift Rule and the Peak Day Rule, whichever comes last overrules the other one.
Note: Whenever, and as long as you experience cervical fluid of any kind, you have to consider yourself to be fertile.
We do not guarantee the method of birth control or pregnancy achievement as described on this web site.