How To Keep Track Of When You're Fertile

It’s a common misconception that women are fertile every day (think about it... hormonal birth control is taken daily to prevent pregnancy). But in fact, we’re only fertile 5-7 days per cycle. We ovulate on one day per month and that egg survives 12-24 hours; however, as ovulation approaches, our bodies produce cervical fluid that can keep sperm alive for up to 5 days.

Because the average menstrual cycle is 28-ish days (somewhere between 26-and-34 days for most women), this means you’ll have more success conceiving if you know your cycle well. There are numerous ways to do this: tracking your period on your calendar or using an app (MyFLO, Flo, Clue). 

However, the best way to get super in tune to your cycle and specifically, pinpoint ovulation, is by tracking fertility signs. This will involve measuring and tracking your daily basal body temperature or BBT, which is your temperature first thing upon waking. You can use any thermometer that measures to 2 decimal places or a fertility tracking device like Daysy, Kindara Wink, or even the Ava fertility bracelet. A rise in BBT occurs after you ovulate and drops when you get your period (or stays high if you get pregnant). You will also track your cervical mucus (and ideally, cervical position, too).

This book and this book are wonderful resources to help you learn all about the Fertility Awareness Method to get started.


This is an excerpt from a post written by Kim Perez, NTP (@rootandbranchnutrition) and originally published on September 5, 2019.

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