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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The CQC 2019 survey of women’s expe…

AIMS Journal, 2020, Vol 32, No 2 By Nadia Higson The Care Quality Commission (CQC) maternity care survey was first run in 2007, and has been conducted annually since 2017…

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Incentives for Continuity of Carer…

AIMS Journal, 2020, Vol 32, No 2 By the AIMS Campaigns Team Trust Boards will now have a strong incentive to make sure that Continuity of Carer is firmly on their agenda,…

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What has the AIMS Campaigns team be…

AIMS Journal, 2020, Vol 32, No 2 We reviewed the Care Quality Commission’s (CQC) 2019 survey of women’s experiences of maternity care. 1 We wrote a letter to the key stak…

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Events

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AIMS 60th Anniversary Event - Confe…

POSTPONED FROM JUNE 2020 Making a difference past and future The purpose of the day is to celebrate what Birth Activists in general and AIMS in particular have achieved,…

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NICE Annual Conference 2020

Registration for the NICE Annual Conference 2020 will open on 22 January 2020. For more details and to register your interest, please visit http://www.niceconference.org.…

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IMUK National Conference 2020

The theme of IMUK's 2020 National Conference 2020 is The Science Behind The Art of Midwifery. Speakers to be announced and tickets will be released soon. Information is a…

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Latest Campaigns

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AIMS' evidence to the Health and So…

AIMS' evidence to the Health and Social Care Select Committee On April 22, the UK Parliament's Health and Social Care Select Committee opened an inquiry ​into the plannin…

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AIMS Comments on RCM Clinical Brief…

AIMS welcomes the recent publication of the RCM Clinical Briefing Sheet: ‘freebirth’ or ‘unassisted childbirth’ during the COVID-19 pandemic ( www.rcm.org.uk/media/3904/f…

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Template Campaigning Letters about…

AIMS has had many enquiries about how to find out about, and seek to influence, local service changes during this period. Here we have included several examples of issues…

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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.