Women Supporting Women
• Campaigning for better births for all
• Protecting human rights in childbirth
• Independent information about pregnancy and birth
• Raising awareness of research

For a better birth

Latest Content

Journal

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Obituary of Mary Cronk, 1932-2018

AIMS Journal, 2019, Vol 30, No 4 Mary Cronk’s family announced that Mary had passed away on the morning of 21st December 2018. She was known nationally, and international…

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Book Review: When Survivors Give Bi…

ISBN 978-1-594040221 Complete list of book reviews on the AIMS website AIMS Journal, 2019, Vol 30, No 4 Reviewed for AIMS by Kicki Hansard Published in 2004 ISBN 978-1594…

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Book Review: Traumatic Childbirth b…

Complete list of book reviews on the AIMS website AIMS Journal, 2019, Vol 30, No 4 Reviewed by Mari Greenfield First edition, published 2013 ISBN 978-0415678100 272 pages…

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Events

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AIMS Volunteers Meeting

Details TBC

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Midwifery Today Conference - “Creat…

Blankenberge, Belgium • 30 October – 3 November 2019 This is expected to be a popular event with a diverse, international audience and plenty of opportunities to network.…

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ARM Annual Gathering and Retreat

September 20, 2019 @ 3:00 pm – September 27, 2019 @ 12:00 pm Join ARM for a night or a week at a house in Snowdonia and have the opportunity to discuss the midwifery issu…

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Latest Campaigns

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Letter to The Guardian in response…

Sent 9th May 2019 By email ( guardian.readers@theguardian.com ) Dear Sir, I write in response to the opinion piece by Barbara Ellen entitled “Meghan Markle’s home birth s…

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AIMS Response to MBRRACE-UK Report…

Download PDF MBRRACE-UK: Saving Lives, Improving Mothers’ Care MBRRACE-UK: Perinatal Mortality Surveillance report for births in 2016 www.npeu.ox.ac.uk/mbrrace-uk/reports…

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Implementing Better Births: Continu…

Download PDF Commissioners and providers across England, guided by their MVPs, are working across the country to implement sustainable Continuity of Carer models of care,…

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Pregnancy Calculator i

When's your due date?

What does your "due date" mean? How long is a normal pregnancy? How might being given a due date affect you and your baby? Enter the first day of your last period to discover when you're most likely to give birth.... and to find out more about due dates, induction and "post date" babies.
You are weeks pregnant.
Date of the first day of your last period
Adjusted cycle length

Date of the first day of your last period

The date of your last period allows an estimation of when you ovulated and conceived your baby.

A surprising number of women will have a bleed after they are pregnant, and although seeking advice from a doctor or midwife is recommended, usually this bleeding is not a problem.

Adjusted cycle length

Your menstrual cycle is counted from the first day of one period to the first day of the next. The average menstrual cycle is 28 days long, but many women will have longer or shorter cycles than this.

Ovulation usually takes place about 14 days before the next period. This means in a short cycle ovulation will be less than 14 days after your last period and with a long cycle more than 14 days after your last period. Giving the length of the cycle allows this to be taken into account in calculating your due date.

Many women have irregular cycles which make using the last day of their period less reliable for estimating due date.