Put it back in the suitable position in your armpit if this happens. However, if the iFertracker is out of your armpit longer than 30 minutes it will not be able to find the lowest body temperature point in a stable sleep state. As a result, when you sync to your app, it will tell you that the basal body temperature has not been recorded. If your device falls off frequently, we suggest you change patches, shave your armpit, and clean skin with water or medical alcohol before wearing.

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