Tommy's PregnancyHub

How to know when you are pregnant

How do you know whether you’re pregnant or not? If you’ve been trying to get pregnant, there are a few ways to find out whether you’re pregnant.

Early pregnancy symptoms

If you notice one or more of these symptoms, it might be an early sign of pregnancy and a good idea to take a pregnancy test.

•      Late period
•      Extreme tiredness
•      Need to wee more often
•      Nausea
•      A metallic taste in your mouth
•      Sensitivity to smells
•      Tender or sore breasts.

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How do pregnancy tests work?

Pregnancy tests work by detecting one of the key early signs of pregnancy: a hormone called human chorionic gonadotrophin (hCG). This hormone is only made when a woman is pregnant.

Traces of hCG can be found in the urine from three to four days after implantation, but the concentration needs to continue to build up to a level at which the test can detect it and give a positive result. The best time to take a pregnancy test is from the day that the period is missed. 

Where can I get a pregnancy test?

GP pregnancy test

These tests are either free or a small fee is charged.

You’ll need to take a sample of your urine in a clean container (you can get sample pots from your GP’s surgery). The best time to collect a urine sample is first thing in the morning. This is because levels of hCG will have built up overnight.

If the urine sample is tested on the spot, you probably will be given the result after just a few minutes. You may have to wait up to a few days for the pregnancy test results though.

Home pregnancy test

These tests are available to buy from chemists or supermarkets and enable you to find out if you are pregnant in private after a few minutes.

The tests are considered to be quite accurate, although it is essential that you follow the manufacturer’s instructions carefully.

Choose a kit that you think will be easy for you to use and make sure that you understand what mark or symbol will appear if the test is positive.

Find out more about taking a pregnancy test.

How accurate is the pregnancy test?

It is important to know that whilst a positive result is likely to be accurate, a negative result may be misleading. Some women have a negative result and test again a week later to find that it is positive.

This is due to the levels of pregnancy hormone gradually building up to a level at which they can be detected. If you test yourself very early on and you have a negative result, you should carry out another test in 2-3 days’ time if you have still not had a period.

If you continue to get negative results and still no period, you should consult your doctor.

What should I do if I am pregnant?

Once you get a positive pregnancy test, make an appointment to see your doctor or a midwife.

Tell the doctor’s surgery when you are making the appointment that you have had a positive pregnancy test result as you might need a longer appointment.

  1. Macdonald S, Magill-Cuerden J (2012) Mayes’ midwifery, 14th edition, London Balliere Tindall
Review dates

Last reviewed: 13 June 2017
Next review: 13 June 2020