I have very irregular periods. Will it take longer to conceive?

Many women have irregular periods and still conceive. Getting pregnant may take a little longer though as you may not ovulate as much as women with regular periods.

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Ovulation is less predictable if you have irregular periods. This means it can be useful to know when you are at your most fertile. Consider keeping a diary of your periods. You may find that even though your periods are irregular, there is still some sort of pattern to them. There are also apps that can help you track your cycle to make this easier.

You may also find it helpful to keep notes of changes to your cervical fluid. This can help you predict your fertile time.

Some women, however, may have a very confusing pattern of cervical mucus. A fertility-awareness trained nurse may be able to help you.

For a list of NHS clinics, visit Fertility UK.

Take a look at our conception guide


  1. Macdonald S, Magill-Cuerden J, Mayes’ midwifery, fourteenth edition, Edinburgh Bailliere Tindall Elsevier, 2012
  2. Falcone T, Hurd W, Clinical reproductive medicine and surgery: a practical guide, New York Springer, 2013
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Last reviewed on June 13th, 2017. Next review date June 13th, 2020.

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