Note: this article applies to Cyclers using the app with a basal thermometer. If you use a wearable device, please refer to the Oura or Apple Watch sections of Cyclerpedia.
You can take your thermometer with you when you travel so you can keep measuring even while traveling.
It is okay to bring your thermometer with you through airport security, but we also recommend that you check with the airline that you’ll be using to be sure.
If you travel across several time zones and experience jet lag, we recommend excluding your temperatures during the first 1-2 days. After adjusting to the new time zone, you should measure as usual when you wake up in the morning. Remember to always exclude your temperature if you feel hungover, sick, have slept less than usual, or have slept in.
It's also good to know that traveling can be stressful on the body, which means that it can sometimes affect your cycle. For example, it could cause delayed ovulation and, therefore, some cycle irregularities.
If you don’t have an internet connection while using Natural Cycles, you will automatically enter Offline Mode, where the app will save your data to sync when you are back online again. Your fertility status will be orange and display 'Use Protection' for users on NC° Birth Control, and 'Offline' for users on NC° Plan Pregnancy. Learn more about the Offline mode here.
When traveling, please bring your thermometer with you and avoid switching thermometers. A basal thermometer is highly accurate, but from one thermometer to another, there can be a small difference in how each one measures. An example is if one of your thermometers shows one temperature, the second can show a 0.1° C difference. As the app is looking for the smallest differences to locate where you are in your cycle, having two thermometers can cause false temperature fluctuations, even if both of the thermometers are from us. If needed, you should only change thermometers at the beginning of a new cycle.
It is also good to remember that if you do not measure every day or sometimes need to exclude your temperature, Natural Cycles' effectiveness as a birth control will not be affected. Logging less temperature data means that you may experience more Red Days, where protection is needed, which may reduce your satisfaction with Natural Cycles. Learn more here.
If you are traveling to a country with a different climate, this article may be helpful.