International travel can affect your period, either by delaying it or even bringing it on sooner.

“It’s got nothing necessarily to do with the timezone you’re in, but more the disturbance in your patterns of sleep…”

Changes to your menstrual cycle while travelling all come down to our hormones shifting. Long haul flights can cause stress on our bodies which in turn may make your ovulation schedule move around.

Head over to Mamamia to read the article.

There are also other reasons that your period might be late – Read more here