Trying to get pregnant? There’s a new device for that. Trying to not get pregnant? That same device can also serve as a tool in your overall fertility awareness.

Meet kegg, a 2-in-1 fertility tracker that measures changes in your cervical mucus, to predict and identify ovulation.

Birth control and devices that help when you are trying to conceive are a highly personal decision. For me, I have always gravitated toward more natural forms of birth control—like barrier methods and fertility trackers. I also geek out over new devices in the #femtech space that enable users to more accurately track their personal fertility and cycles, making getting pregnant a more empowered, and less mysterious, process.

Related: Ovulation tests can improve your chances of conceiving, study shows

I was excited to try kegg, a new medical device inserted vaginally (think small vibrator size) that measures cervical fluid, helping you to identify the exact dates of your fertility window and peak ovulation. Primarily built as a way to help women identify the exact time of ovulation to get pregnant, it can also be used as a complementary tool to help confirm ovulation for those who use Fertility Awareness Methods.

Kegg tracks the changes of electrolyte levels in vaginal fluids associated with the beginning and the end of the fertile window, allowing you to know exactly what’s going on inside your body, in real-time.

Wanna know how to get pregnant? You want the kegg.

Don’t want to get pregnant, and you’re using natural means to avoid pregnancy? You can build the kegg into your peace-of-mind toolkit, allowing you to incredibly precisely and confidently confirm ovulation.

It’s not sexy, but cervical fluid is a critical indicator of fertility. Know your cervical mucus, know thyself, baby.

How does the kegg Fertility Tracker work?

Download the app onto your smartphone and set a time of day to take your temperature, ideally first thing in the morning.

Insert the device into your vagina first thing in the morning, and then, chill! The device remains inside you for between 30 seconds to 2 minutes to do a complete reading, depending on whether or not you’re also using kegel mode (read on below). Typically, I would lay back and think of England—I mean, scroll my phone—and wait to get my results. It’s painless and quick.

Bonus feature: You can actually use the kegg as a kegel tracker device to help strengthen your pelvic floor, and can enable that mode as part of your daily testing.

Related: These are the actual chances of getting pregnant each month

Then, you get your cervical fluid reading immediately sent and plotted onto kegg’s fertility app and chart.

Over the course of a few cycles, your results will become even more accurate and personalized.

At $259, the device is definitely a long-term investment in understanding your fertility. That said, considering the average woman has 450 periods during her lifetime, those who love fertility science will consider it a worthy investment. Plus, if you do some research, you’ll learn that kegg is one of many HSA approved baby items you can add to your cart and not feel the dent in your bank account.

If you’re trying to get pregnant, the kegg can be useful in pinpointing exactly what’s going on inside your uterus and cervix, providing an extra piece of information during what can be a mysterious and frustrating process. You can use kegg alone as you’re trying to get pregnant, or you can add in other complementing devices like ovulation predictor tests and taking your basal temperature orally. It’s small, portable and discrete.

If you’re squeamish about inserting a device into your vagina, or prefer to not know about your mucus, the kegg likely isn’t for you.

But if you’re open to inserting kegg vaginally for an up-close and personal look into one of the most critical factors impacting your fertility—your cervical mucus—check the kegg out.

The kegg 2-in-1 Fertility Tracker
$259.00

The kegg 2-in-1 Fertility Tracker

Each purchase comes a free Proov Test ($30 value) – a tool that tracks PdG – a progesterone metabolite – to confirm ovulation, providing accurate results in just 5 minutes. It’s also FSA and HSA eligible!

A version of this article was published October 22, 2021. It has been updated.