How early can i take a pregnancy test after ovulation

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.

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. Your options are:

  • continuing with the pregnancy and keeping the baby
  • having an abortion
  • continuing with the pregnancy and having the baby adopted

As well as a GP or a nurse at your GP surgery, you can also get accurate, confidential information – from the age of 13 – from the following:

  • sexual health services
  • the MSI Reproductive Choices website
  • the British Pregnancy Advisory service website
  • the National Unplanned Pregnancy Advisory service website

All these services – including community contraceptive clinics – are confidential. If you're 13 or older, the staff won't tell your parents. They'll encourage you to talk to your parents, but they won't force you. 

If you're under 25 and would prefer advice specifically for young people, the sexual health charity Brook provides a range of services for young people. The Brook website contains information on pregnancy choices. You can also use the Ask Brook 24/7 service.

Video: Is the pregnancy test accurate?

In this video, a midwife explains when you can take a pregnancy test and how to do it properly.

Media last reviewed: 5 February 2020
Media review due: 5 February 2023

For many people trying to conceive, taking multiple early pregnancy tests becomes a habit. However, taking them before your period is expected is not recommended because even if you are pregnant the test may not produce an accurate result. Instead, it's best to wait until at least 14 days past ovulation (DPO) before doing a pregnancy test. This is typically when enough hCG hormone would be circulating in your body for a positive reading, Holding off to 15 DPO is even better.

Whether you are hoping for a positive result or are not trying to conceive and anxious to know ASAP if you're pregnant, there are many good reasons not to take tests early (“early" meaning before your period is actually due, although technically, a pregnancy test taken on the day your period is due is also considered early). The good news is that once you wait until 14 or 15 DPO, test accuracy is extremely high. So, before you take that next test early, consider these drawbacks.

Disappointment

If you're hoping to conceive and your early test is negative, you’re likely to be disappointed. The odds of getting a positive result at 10 DPO are extremely small, even if you did actually conceive. Every day earlier than that, those odds are even lower.

What about early pregnancy tests—the ones where the box says you can take the test before your missed period? If taken correctly, these may deliver a positive result a day or two before your period is expected (say, at 12 DPO, not 10). But an early negative may be false. That means waiting another few days and re-testing. Consider whether that is worth your money and your emotional well-being.

Unclear Results

An early test doesn’t really answer any questions. It just confirms you don’t have any detectable pregnancy hormone in your urine yet. The process of fertilization and implantation takes several days, and a test taken before this process is complete won't be positive even if you're pregnant.

Chemical Pregnancy

If you do get an early positive pregnancy test result, it's not time to relax and celebrate (if you want to be pregnant) or panic (if you don't want to be pregnant). Unfortunately, one of the biggest drawbacks of early testing is that these early tests can detect a pregnancy that isn’t going to last, known as a chemical pregnancy.

According to at least one study, very early miscarriages may occur up to 30% of the time. Some are so early that most people don’t realize they are having one. If you don't test, you will get your period without knowing that you had conceived a nonviable pregnancy. While it may be disappointing to get your period, this may be less painful than thinking you were pregnant and then experiencing a loss.

You should not consider a positive to be a true positive until it happens at 15 or 16 DPO (in other words, after your period is late). Of course, there is still a risk of miscarriage at this point but it's lower than at 10 DPO.

Anxiety

The two-week wait can be a stressful, anxious time, born out of the uncertainty between ovulation and your expected period. You may think that taking tests makes it less intense, but it really doesn’t. You just won’t know if you're pregnant until your period is late and then you take a test.

Taken too early, a test—whether it's negative or positive—will not give you a clear answer. And that uncertainty is likely to do nothing to ease your anxiety during this time.

Effect of Fertility Treatments

If you’re going through fertility treatments, an early pregnancy test may pick up on the hormones used in these treatments. Specifically, if you have a trigger shot—or an injection of hCG, sold under the brand names Ovidrel, Novarel, Pregnyl, and Profasi—you’re injecting pregnancy hormone into your system.

This means that if you took a pregnancy test the day after the injection, you would get a positive result. But that doesn’t mean you’re pregnant. Wait at least 10 days after the injection to test (12 days is even better).

Cost

Even the ultra-cheap pregnancy test strips that you buy in bulk can add up if you take multiple tests per month (which you'll need to do if you test too early). If you're trying to conceive for several months or more, you'll use a lot of tests. Since you can't get a definitive answer on a too-early test, save them for when they're more likely to be accurate.

A Word From Verywell

Taking an early pregnancy test is certainly tempting if you are trying to conceive. Tests promising an early result are readily available, as are very inexpensive options that might allow you to take multiple tests with every cycle. But the uncertainty of early testing may produce more stress than waiting, even when waiting feels like an eternity. If that's the case for you, hold off until you miss your period.

Verywell Family uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.

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  2. Cleveland Clinic. Your guide to pregnancy tests.

  3. Han S. The chemical pregnancy: Technology, mothering, and the making of a reproductive experience. J Motherhood Initiative. 2014;5(2):42-53.

  4. Larsen EC, Christiansen OB, Kolte AM, Macklon N. New insights into mechanisms behind miscarriage. BMC Med. 2013;11(1):154. doi:10.1186/1741-7015-11-154

  5. U.S. Food and Drug Administration. Pregnancy.

  6. Annan JJ, Gudi A, Bhide P, Shah A, Homburg R. Biochemical pregnancy during assisted conception: A little bit pregnant. J Clin Med Res. 2013;5(4):269-274. doi:10.4021/jocmr1008w

How early can i take a pregnancy test after ovulation

By Rachel Gurevich, RN
Rachel Gurevich is a fertility advocate, author, and recipient of The Hope Award for Achievement, from Resolve: The National Infertility Association. She is a professional member of the Association of Health Care Journalists and has been writing about women’s health since 2001. Rachel uses her own experiences with infertility to write compassionate, practical, and supportive articles.

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