Let's Talk NFP

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By Rebecca Teti

Wednesdays: Natural Family Planning

(Join each day’s Coffee Talk discussion: Mon: Parenting; Tues: Open Forum; Wed: NFP; Thu: Marriage; Fri: Education; Sat/Sun: Changing Roles)

This weekly thread is a place where you can share your struggles, triumphs, links, resources, concerns, and questions about all things related to Natural Family Planning.

Please join the conversation! 

Rebecca Teti


  • I'm a bit confused by the information on the Marquette University website. It says that "Both the Clearblue monitor and the LH test kits are designed to help couples achieve pregnancy. However, when used appropriately and with the proper instructions they can also be used as an aid to avoiding pregnancy," but then it says that "The disadvantage of the monitor, if using it to avoid pregnancy, is that the 2-5 day warning period it provides is not long enough to avoid pregnancy." Shouldn't the 2-5 day warning period be enough? Isn't that about the same as when using cervical mucus to chart?

    Posted on Apr 17th, 2013 at 12:10 PM by unknown

  • I think the reason is that sperm can last 3-5 days in fertile mucus. So, if you have intercourse on day 10 (for example) and have fertile mucus, but the monitor doesn't give you a warning of impending ovulation until day 11, and you ovulate on day 13, the sperm could still be viable.

    Posted on Apr 17th, 2013 at 12:30 PM by MR