Your menstrual cycle and ovulation are controlled by a specific balance of hormones that your body gets used to.

Changes in this balance can result in a shift in ovulation date. Travel, particularly under stressful circumstances or over different time zones, has been known to interfere with the timing of ovulation, which can make it more difficult to identify your fertile window.

Scientists say it is not the literal, physical travelling that can affect ovulation, but rather all of the stressors and environment changes that are a part of it.

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