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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I'm bleeding after a medical abortion

You'll experience bleeding from having a medical abortion (or abortion pill). While a medical abortion generally causes some discomfort, some women prefer this method as it doesn't involve surgery or an anaesthetic.

After taking misoprostol

You'll experience bleeding and some cramping, although this may not happen straight away. It's very important you use pads and not tampons to avoid infection. 

You'll be advised to take pain relief in the form of paracetamol and/or ibuprofen. You can apply a warm pad or (warm) hot water bottle to your abdomen if this makes you more comfortable. Please do not take aspirin.

The cramps may become strong - this is a normal part of the abortion process. 

Bleeding may get heavier and you may pass clots. This is usually at the time that you'll begin to lose your pregnancy. 

Often the pregnancy is passed into the toilet, you may not see it specifically, and this may appear as a clot.

Side effects of the medication can include:

  • Nausea or vomiting
  • Dizziness
  • Headaches
  • Diarrhoea 
  • Fever/chills, temporary flushes, or sweats 
  • Tiredness

The onset of these symptoms can be fairly soon after taking the medication, so you need to plan your journey home.

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. If heavy bleeding occurs for more than two days, or you are soaking more than two pads per hour call our helpline for advice. 

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.

We recommend that you arrange a lift home before taking your second tablets and do not attempt to drive yourself or take public transport.

Pain relief

  • You'll be given advice on pain relief tablets such as paracetamol, codeine, or ibuprofen. These pain medications will not interfere with the abortion medication 
  • Please do not take aspirin as it can increase bleeding
  • You can apply a heat pad or (warm) hot water bottle wrapped in a towel or blanket to your lower abdomen if this makes you more comfortable
  • Comfy, loose clothes and being comfortable and relaxed at home can also lessen pain

You can take your painkillers with your contraceptive pill and antibiotics, and if you have an implant, contraceptive injection or coil. If you're unable to take Ibuprofen because you are asthmatic, on anti-depressants, have a history of stomach ulcers/bleeding, renal failure or allergy; please take your normal pain medication. If you're unsure, please call our 24hr aftercare line and speak to a nurse. 

If pain is severe and not responding to painkillers, please call our nurse aftercare line on 0345 122 1441 for further assessment and advice. 

Available download:

PDF icon Medical abortion aftercare leaflet.pdf402.61 KB