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Can you get pregnant on your period?

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Written by Jennifer Gray

Jennifer Gray

Jennifer Gray is an award-winning writer with more than five years’ experience covering reproductive topics ranging from birth control to planning pregnancy. She is passionate about providing women with accurate information grounded in science they can use to take charge of their own health - while also dispelling myths that exist within the field of women’s health. She holds a Master of Science from the University of Edinburgh and currently lives in Ireland.

Fact checked by Jack Pearson, Medical Affairs Manager at Natural Cycles

Jack Pearson

Dr. Jack Pearson is a previously HCPC registered Embryologist with a PhD in reproductive medicine. Prior to joining Natural Cycles leading Medical Affairs, he worked for more than 10 years in a clinical setting working at some of the busiest fertility clinics in the UK. Today he spends most of his time working with experts at the world’s leading institutions to carry out important research with the vision to further the field of female health. He earned his PhD from the University of Sheffield specializing in Sperm Metabolism and currently lives in London.

Key takeaways:

  • It’s possible to get pregnant on your period, but only if you have a very short cycle
  • The fertile window is only six days long, and for most people, this won’t coincide with days of menstruation
  • Learning the pattern of your cycle can help you know exactly when you’re fertile

The chances of getting pregnant if you have sex on your period are extremely small. This can happen if you have a very short menstrual cycle and a longer menstrual bleed. Read on to learn more about the likelihood of getting pregnant on your period, and the chances of getting pregnant at different points in the menstrual cycle, too.

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