Catechism of the Catholic Church, no. 2370
Flow patterns and duration determine if a woman is starting a new cycle or experiencing hormonal bleed. May signpost to health issues to be addressed
Rising estrogen stimulates production of cervical mucus leading up to ovulation. Becomes watery/ egg-white/ stretchy at peak fertility and ovulation
Rising progesterone causes an increase of body basal temperature post ovulation. Signals that successful ovulation has occured
Estrogen, LH, and Progesterone can be monitored directly through the urine with test strips and fertility monitors - varying levels of data specificity
Cervical mucus-only method developed in the 1950s.
It emphasizes observing sensation (e.g., dryness, wetness, slipperiness) at the vulva to identify fertile days
Typical use effectiveness between 78-99%
Standardized adaptation of Billings introduced in the 1980s.
It uses structured, detailed mucus observations (e.g., texure, appearance) with defined coding
Typical use effectiveness between 96.8-97%
Charting used by Napro Technology physicians to help couples struggling with fertility challenges - diagnostic benefit
Sympto-thermal method combines algorithm, mucus, and temperature
Taught by professional trained volunteer couples
Typical use effectiveness is 98.2%
Sympto-Pro is another method combining mucus, and temperature
Sensi-plan is another method combining mucus, and temperature
Sympto-hormonal method combining urinary LH strips and Mucus observations
Can add temperature tracking as well
FEMM works closely with FEMM-trained doctors and nurses.
Not currently listed with the USCCB for NFP since there's no standardized integration with Catholic church teaching
Sympto-hormonal method which tracks urinary estrogen and LH with the Clearblue Fertility monitor or the Mira monitor
High rates of user satisfaction due to the ease of using simple objective data to determine fertility status, no mucus monitoring required
Progesterone tracking with Mira or PROOV test strips can be added for ovulation confirmation
Protocols can be used with or without additional biomarkers of temperature and mucus tracking
Adaptable to a low-cost mucus and LH strip protocol if desired
Well-researched postpartum breastfeeding protocol women can use before return of menses with 98% perfect use efficacy, and 96% typical use efficacy
Protocols to support perimenopausal women in managing fertility and avoiding pregnancy
Protocols to support women with PCOS manage their fertility and assist medical management
Typical use efficacy in regular cycles is 98%
Yes! Because the monitor measures your hormones and (if tracking other bio-markers) we observe mucus and temperature in real-time each cycle, Marquette ensures we find your peak/ovulation day, even if it varies from cycle to cycle. We may have to use a few extra steps if you have extra-long cycles greater than 35 days. This is why working with an instructor is so important. If you have PCOS or other health issues underlying your irregular cycles, tracking and charting will provide valuable information to bring to your physician to uncover and treat the root cause. We can help you get in touch with a NaPro Practitioner to help you if desired. The Mira monitor is sometimes helpful if you have uncontrolled PCOS.
It's your choice! Many couples find it extremely helpful to learn a method of NFP before they get married so that they are already up to speed and ready with the knowledge of their fertility regardless of if they have to avoid pregnancy in the near future or not. The first six cycles may require more abstinence as well, so getting those charted before the wedding can give you more available days in your married life.
Additionally, unexpected circumstances can arise to make avoiding pregnancy necessary at any point in a married life, and it's helpful to have knowledge to draw on without having to learn a new method in the midst of a stressful life circumstance. Some couples plan to achieve pregnancy right away after the wedding, and NFP can also help with getting pregnant! Other couples come to learn Marquette after the birth of their first baby and the Marquette Breastfeeding Protocols make this a natural time to learn a new method and gain space for their body to recover from pregnancy and birth.
Absolutely! Fertility awareness is awareness of your health and natural biological functions. If you are interested in learning NFP to track your cycles and learn and understand your body, we can do a mini-class at reduced fee to teach you and help you learn how to track for health understanding. Contact me for custom price, as instruction will be less. We can use a non-monitor protocol as well if expense is an issue.
While the fertile window in reality is only 6 days long in any given cycle, and modern methods of NFP can pinpoint it with greater accuracy than ever before, the preovulatory phase length of a cycle can vary from cycle to cycle for a woman. There are therefore extra days of abstinence required in the preovulatory phase to account for the variability of peak day. Once LH peak is detected, we know ovulation will happen within a 3 day window so our protocol accounts for the most conservative case of the latest ovulation - all together the minimum number of days of abstinence with Marquette will be 11 days/cycle and more days may be required, especially while learning the method in the first 6 months of regular cycles.
Yes - if cost is a concern, we have options to use an LH strip protocol with mucus (current study underway to determine exact effectiveness rates). If using the Mira Monitor I have access to a significant instructor discount I can pass on to you. I also have information about ongoing costs here and ways to save.
Marquette has extremely high rates of efficacy, particularly in the "typical use" rates compared to other methods of NFP. In regular cycles, Marquette is 98.4% effective with perfect use and 98% effective with typical use with monitor only. This is on par or higher than most forms of artificial contraception (the oral birth control pill is 93% effective with typical use, for example) However, to make the method even more conservative we can add in buffer days to the algorithmic start of fertility, choose to use Phase 3 only (post ovulatory infertile days), and add in double check tests to confirm ovulation (temperature or urine progesterone tests).
It depends on your situation! For most women, the Clearblue monitor will meet their needs perfectly well. It's a simpler piece of technology with robust efficacy data supporting the protocols for both regular and breastfeeding cycles. Mira is a newer device and efficacy studies are still underway so protocols are considered provisional until they have been studied further. If you are perimenopausal, are going through chemotherapy, have struggled with months of "high" days in Cycle 0 before, have uncontrolled PCOS, or just love the quantitative data that the Mira provides, it can be an excellent choice! It offers more data and more flexible testing. We can have a phone consultation to determine if it's the right fit for you. I'd be happy to discuss the pros and cons!