Interpreting your fertility insight - kegg

Interpreting your fertility insight

kegg is taking the guesswork out of fertility tracking while demystifying the most accurate way to assess a woman’s fertile window: vaginal fluid.
kegg product feature
Co-written by:
Pear Poolvaraluk — Marketing & Community Manager
Andrea Grace — Mother, fertility awareness practicer, and moderator of kegg’s online community
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kegg is an intuitive 2-in-1 fertility tracker intended to detect a woman’s fertile window and possible ovulation up to 7 days in advance.* kegg senses changes in vaginal fluids, so it is as precise as your body. For about 2 minutes of use each day, you’ll be able to track your unique cycle in real-time while exercising your pelvic floor through its kegel training feature.

How does it work?

Through advanced sensing technology known as impedance, kegg can measure changes in the electrolyte levels of cervical mucus.

*Millions of women in the US currently track their cervical fluids with their fingers

Fun fact: Cervical mucus is full of minerals and metals like sodium, potassium, calcium, magnesium, zinc, copper, and iron. These elements make up the electrolyte structure of cervical fluid and the concentration changes throughout cycle. This is essentially what kegg measures!

When it comes to fertility, there are two main sex hormones at play: estrogen and progesterone. When you enter your fertile window, you will experience a rise in estrogen levels, indicating approaching ovulation as seen in this graph below:

Graph 1. Probability of Pregnancy from Intercourse on Days Relative to Ovulation

This surge in estrogen triggers the cervix to secrete cervical fluid. Women typically have the most fertile cervical fluid 2–3 days before ovulation, which are typically a woman’s best chances for conception. (1)

kegg is sensing the electrolyte levels which should detect the hormonal switch from estrogen to progesterone dominance that accompanies ovulation by sensing the changes in fluid structure.

Complete cycle graph from a kegg beta-tester

As you can see in the graph above, low vaginal readings starting from Cycle Day 12 to Day 15 indicate high levels of estrogen and low levels of progesterone, whereas the rise in vaginal reading on Cycle Day 16 indicates a drop in estrogen levels and a surge of progesterone. The lowest point of vaginal electrical resistivity correlates with positive ovulation. (2)

If ovulation has occurred, then the vaginal readings continue to stay risen throughout the luteal phase due to progesterone taking dominance.

Note for those practicing fertility awareness methods: This is similar to when you track your cervical fluid and vaginal sensation and discover that the day after ovulation tends to dry up fairly quickly. Remember that kegg is not to be used to avoid pregnancy.

Progesterone is called the “the pregnancy hormone” for a reason — that’s because it helps the fertilized egg be implanted in the uterus to establish a pregnancy and help maintain a healthy pregnancy.

Did you know: If fertilization does occur, it will take place in the outer third of the fallopian tube within the few hours of ovulation, not in the uterus like many believe. That’s one of the many misconceptions about conception.

How is the kegg graph different from a basal body temperature graph?

When tracking your BBT, typically a surge mid-cycle signifies ovulation. You can likely assume that the days leading up to this temperature surge were your fertile days; however, this is of limited benefit after the fact when you’re trying to conceive because you might miss your most fertile days prior to ovulation.

With kegg, you can most likely assume you ovulated after 3 consecutive elevated electrolyte levels. But, kegg can only suggest when ovulation has occurred. No consumer device can confirm ovulation with 100% accuracy. Only ultrasound and a doctor can confirm ovulation.

If you struggle to track your fertile window because of irregular cycles (like many women do), kegg gives you readings about your unique cycle.

Even if you haven’t used kegg all month and you use it one day, you will be able to see your accurate data. That being said, consistent use allows for better predictions. If you don’t use kegg consistently, the mobile app may tell you it does not have enough data to make any predictions at all, so the key is to be consistent.

Everyone’s cycle is unique.
The old school rule of “you ovulate on day 14 and have a 28-day cycle” just isn’t true for everyone, and relying on that can skew your chances of conception.

Knowing your fertile window maximizes your chances of natural conception, and kegg is here to bring you a convenient solution for stress-free fertility tracking.

* studies are undergoing
1
Jamie L. et al., Mucus observations in the fertile window: a better predictor of conception than timing of intercourse, Human Reproduction, Volume 19, Issue 4, April 2004
2 Albrecht. et al., A new method for predicting and confirming ovulation, The American Fertility Society, Volume 44, №2, August 1985

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