If you have missed a period and recently had unprotected sex, you may be pregnant. Pregnancy tests are most reliable from the first day of your missed period.
When you can do a pregnancy test
You can carry out most pregnancy tests from the first day of a missed period. If you don’t know when your next period is due, do the test at least 21 days after you last had unprotected sex.
Some very sensitive pregnancy tests can be used even before you miss a period.
You can do a pregnancy test on a sample of urine collected at any time of the day. It doesn’t have to be in the morning.
Where you can get a pregnancy test
You can buy pregnancy testing kits from pharmacists and some supermarkets. They can give a quick result and you can do the test in private.
The following places provide free pregnancy tests:
- sexual health services
- some young people’s services – call the national sexual health helpline on 0300 123 7123 for details
- Brook centres for under-25s – find your nearest Brook centre
You may also be able to get a pregnancy test free of charge from your GP.
How does a pregnancy test work?
All pregnancy tests detect the hormone human chorionic gonadotrophin (hCG), which starts to be produced around 6 days after fertilisation.
Most pregnancy tests come in a box that contains 1 or 2 long sticks. You pee on the stick and the result appears on the stick after a few minutes. All tests are slightly different, so always check the instructions.
Will a pregnancy test work if I’m on the pill?
Yes.
Some methods of contraception, such as the contraceptive pill, contain hormones, but these hormones will not stop a pregnancy test working.
No method of contraception is completely effective, so it’s important to take a pregnancy test if you think you might be pregnant.
Pregnancy test results
Home pregnancy tests are accurate as long as you follow the instructions correctly.
A positive test result is almost certainly correct. However, a negative test result is less reliable.
The result may not be reliable if you:
- do not follow the instructions properly
- take the test too early
Some medicines can also affect the results.
If you get a negative result and still think you’re pregnant, wait a few days and try again. Speak to your GP if you get a negative result after a second test but your period has not arrived.
Continuing with the pregnancy
If you’re pregnant and want to continue with the pregnancy, contact your GP or a midwife to start your antenatal care. You can use the pregnancy due date calculator to work out when your baby is due.
If you’re not sure you want to be pregnant
If you’re not sure about continuing with the pregnancy, you can discuss this confidentially with a healthcare professional.