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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How long will it take me to recover from a medical abortion?

Recovery times after an uncomplicated abortion will be different for every woman, and will depend on how many weeks pregnant (gestation) at which the abortion occurs. Most women will recover quickly, within a few weeks. Most women can return to work after a few days.

We would recommend you delay returning to work until after the medical abortion is complete as you will have cramping and bleeding. This is usually within 1-2 days after taking the second tablet, but occasionally takes up to two weeks.


During a medical abortion, you'll experience bleeding and cramping and you may pass clots. You may experience heavy bleeding for a few hours. During this time it would be expected for you to pass the pregnancy tissue and blood clots that range in size from small (size of a pound coin) to quite large (size of a lemon) – this is a normal part of the abortion process. 

The abortion may take place within four to five hours and is usually completed within one to two days.

Very occasionally, it can take up to two weeks to pass the pregnancy. Once the pregnancy has been passed, your bleeding will usually lessen and become like a slightly heavier period. It may continue to be quite heavy for a day or two as the uterus needs to contract and return to its normal size.

Please call our aftercare line on 0345 122 1441 if:

  • You have very heavy bleeding that soaks through more than two sanitary pads an hour
  • You have not started to bleed within 48 hours of taking misoprostol

Pregnancy test after your medical abortion

We'll give you a pregnancy test to take home with you to confirm that the pregnancy has passed. We ask that you wait for 3 weeks after your abortion before taking the pregnancy test. This is because some pregnancy hormones can be present for up to 3 weeks following abortion, which can give a false-positive result. 


If the pregnancy test is positive, please call our aftercare line. Our advisors can help you to book an appointment for another ultrasound, and further treatment if needed.


Following an abortion, it's completely normal to experience a range of feelings such as relief, guilt, regret and sadness. For most women, these feelings fade after a few weeks or months. We recommend that you have someone with you after your abortion to talk to. We offer free, confidential counselling for all women who've had abortion treatment at Marie Stopes, for as many sessions as needed. Find out about our counselling services

Serious complications have warning signs

If you experience any of the symptoms below call us straight away: 

  • Very heavy bleeding that soaks through more than 2 sanitary pads an hour. 
  • Abdominal pain or discomfort that is not helped by pain relief medication, or by heat pad.
  • Vaginal discharge that smells unpleasant.
  • Feeling hot and shivery with a high temperature of 38°C or more.
  • Morning sickness that continues for seven days following the abortion.
  • Bleeding has not started 48 hours after inserting the tablets into your vagina.

If any of these symptoms occur you should contact our aftercare line immediately on 0345 122 1441. Alternatively, you should go to A and E or see your GP urgently. Please also read our section on tips to a speedy recovery after an abortion.

Need to talk about your options?

Our caring, 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 0345 122 1441 for aftercare advice. You can also email us at services@mariestopes.org.uk

Stories that matter 

Read our stories that matter page where you will find personal stories sent by women who have had an abortion.