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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Do I have an infection after my abortion?

If you take the antibiotics prescribed after your abortion, you should be at low risk of getting an infection.

Although most women will not get an infection, we advise on the following symptoms:

  • A smelly vaginal discharge can be a sign of infection. Make an appointment with your GP as you may need to have swabs taken and be prescribed antibiotics.

  • Vaginal itch/soreness which is not settling. These symptoms are quite common and may be symptoms of vaginal thrush. We advise applying Canestan cream to your genital area (not in your vagina) which will relieve itching and soreness. The oral thrush tablet Fluconazole will also clear the thrush. Both can be bought from a pharmacy or prescribed by a doctor. If this treatment does not relieve your symptoms within a few days, see your GP.

  • High temperature/fever. Take your temperature with a thermometer. If it is above 39C, take 1gm of Paracetamol (2x tablets) and seek medical advice as you may have an infection. If your temperature is below 38C, take regular Paracetamol for 24hrs (2x tablets 4 hourly, but do not take more than 4 doses in 24 hours) and see if the temperature settles. You should also drink plenty of fluids. If this does not help, see your GP for assessment.

  • Generally feeling unwell. During the first week to ten days after your abortion, it's not unusual to experience hormonal changes. As your body returns back to normal, you may experience headaches and feel hot and cold or shivery for a few days. You may experience similar symptoms to when your period is due and feel very run down. This is all normal at this stage of your recovery. If, however, you feel very unwell with fever, pain or smelly discharge you should see your GP or attend A&E immediately. 

  • You've had sex within two weeks of your abortion and think you may have a sexually transmitted infection. Please call our nurse helpline on 0345 122 1441 to discuss your symptoms. You may also need emergency contraception as it's possible to get pregnant immediately after an abortion. We can arrange emergency contraception and STI screening at Marie Stopes House in central London.