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Measuring while breastfeeding

Breastfeeding can inhibit ovulation and is in itself a 94% protection the first 6 months after birth if you breastfeed full time and haven't gotten your first period yet. But it's good to keep in mind that ovulation may still occur during the first six months too, why a pregnancy may occur.

Until the first ovulation we will show you red days, as our algorithm requires a higher safety level than 94% before giving green days. This could mean a couple of months depending on your own body. If you start measuring while breastfeeding, you will see your first ovulation occur and will therefore know when to expect your first period.
The first cycles after a pregnancy may be irregular, so just keep measuring while your body is working to get back to its regularity.


We recommend that you measure your temperature after the longest stretch of sleep you get during the night, regardless of when you wake up, and that you do this the first thing upon waking up - which means before positioning your baby. Try to find a routine for your measuring that works for you and your family, and measure before moving around in bed.

What you can do if the thermometer beep disturbs the family
Turn off the thermometer instantly after the first beep as you can check the value later or whenever you're up.