After 6 cycles, fertility BEGINS on the earliest day of "peak" during the last 6 cycles minus 6 days or the first "high" reading on the monitor - whichever comes first.
Fertility ENDS on the last "peak" day on the monitor plus 3 full days.
After 6 cycles, fertility ENDS on the last "peak" day of the last 6 cycles plus 3 full days, or the last "peak" day on the monitor plus a count of 3 full days - whichever comes first.
NFP Quick Instructions for
the Marquette Model
The Marquette Model of natural family planning (NFP) has several approaches that can be used for couples wishing to use natural methods for achieving or avoiding pregnancy. The three approaches are:
1) use of an electronic hormonal fertility monitor along with a fertility formula to estimate the time of fertility,
2) use of cervical mucus monitoring along with a fertility formula to estimate the time of fertility, and
3) the combined use of a hormonal fertility monitor along with cervical mucus as a means to estimate the time of fertility.
The benefit of using the electronic hormonal fertility monitor is that it is the most accurate and easy to use method of determining fertility for home use, however, there are expenses in the purchase of the monitor and the monitor test strips. The benefits of using cervical mucus to monitor fertility are that it is convenient to use and there is nothing to purchase. Combining the fertility monitor along with cervical mucus monitoring is more complex but it provides the user with a more conservative method of natural family planning.
The purpose of this section of the NFP Web site is to provide you with quick and easy instructions in the use of these 3 methods. Please choose one of these methods that will fit with your needs and lifestyles. We encourage you to read the more in depth information and instructions on these methods that can be easily found in other sections of this Web site.