Gestation Calculator

This calculator has been designed to give you an idea of the treatment options available to you*. If you decide to have an abortion with Marie Stopes UK, one of our nurses will give a more approximate gestation date during your appointment by way of a scan.
*Please note that this online calculator will only give you an estimated gestation based on the details you have provided.

Please select the first day of your last menstrual period.



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Call us now on 0345 300 8090 or email services@mariestopes.org.uk

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How confidential are Marie Stopes abortion services?

Confidentiality and privacy are often extremely important for clients, who sometimes don't want any family members or their GP to know they want treatment.

Rest assured that it's possible for you to access NHS abortion services without anyone knowing including your family, friends and doctor. It won't go on your medical history either. However, we do recommend you give us the contact details of one friend or family member, in case of an extreme emergency.

The best way to prevent others knowing about your choice is to self-refer to organisations that provide NHS abortion services. These include: Marie Stopes UK, BPAS, family planning clinics or a young person’s clinic such as Brook.

All have qualified health professionals who will ensure you receive high-quality assessment, treatment and medication while maintaining confidentiality. Don't risk your health by purchasing ‘abortion' pills online; they can be extremely unsuitable or dangerous. 

Many clients still prefer to see their GP first before being referred to abortion services funded by the NHS. This way of accessing treatment will go on your medical record.

If you access and pay for abortion services privately, it's your decision whether your GP is notified or not.

Once a person contacts Marie Stopes UK, their data is stored securely.  Every client receives a personal pin number at the appointment booking stage that is only known by them and Marie Stopes, and assists us in keeping information absolutely personal and secure. As a provider of NHS funded services, we have to meet stringent data protection rules as set out in the Data Protection Act 1998.

The contents of the statutory HSA4 form used as part of the termination of pregnancy procedure are completely anonymous and are submitted to the Department of Health for statistical purposes only.

When you book treatment, you can choose how you want to be contacted to protect your privacy over email, text or letter. Any letters sent out by Marie Stopes UK will be discreet.

Need to talk about your options?

Our specialist staff are on hand 24/7 to offer expert advice and support – from your initial consultation to treatment aftercare.

Call us now on 0345 300 8090 or email services@mariestopes.org.uk