An early pregnancy test result can help you consider changes to your lifestyle such as stopping smoking or drinking alcohol. You should speak with your doctor if you find out that you are pregnant before stopping or changing any medication. If you think you could be pregnant, its a good idea to take a test and make sure. Home pregnancy tests can differ in how early theyll detect a pregnancy. In many cases, you might get a positive result from an at-home test as early as 10 days after conception. For a more accurate result, wait until after youve missed your period to take a test. Remember, if you take a test too soon, it could be negative even if youre pregnant. If you get a negative test and then miss your period, take another test. What time should I take a pregnancy test? If you’ve had unprotected sex recently, you may be wondering how long it may be before you know whether you’re pregnant. You might get a blood test for pregnancy if you're having fertility treatments or if your doctor thinks there might be a problem. National Library of Medicine, Medline Plus, HCG blood test - qualitative, December 2020. | Show in the article

A false-positive means your test results were positive, but you are not pregnant. This kind of result is rare but could happen if you misinterpreted the results, took the test too soon after taking a fertility drug with hCG, or had a pregnancy loss soon after the fertilized egg attached to the uterine wall (1).False results — either a false negative or a false positive — mainly happen due to using the test incorrectly. The main reason for a false-negative is testing too early. You might also get a false-negative if you use a home test incorrectly, such as using too much or too little pee. It’s important to follow the directions on your test kit to make sure you get an accurate result. Can a positive test be wrong?

Some private companies also provide screening tests that you have to pay for. The NHS cannot guarantee the quality of private screening. Women can conduct an at-home pregnancy test by testing a sample of urine about two weeks after conception, or about the time a period is due. Home pregnancy tests have become more accurate in the last decade. If the test is used correctly, most home pregnancy tests are 97% to 99% accurate. If you’re eager to know if you’re pregnant, go ahead and do the test 10 or 12 days after you think you’ve conceived. If you get a negative result, no problem. Wait a week and test again if you still haven’t gotten your period. Screening tests for HIV, hepatitis B and syphilis are very accurate, and will tell for certain whether you have these infections.If you notice a thin layer or film formed on the surface of the stored sample, then you are pregnant. If you notice bubble and froth formation and a lot of frizzing as soon as the urine touches the bleaching powder, you are pregnant. Most pregnancy tests don’t ask you to avoid activities or change your lifestyle. The only medication that may interfere with your results is fertility medication containing HCG. Also called a beta HCG test, this blood test measures the specific HCG hormone in your blood in international units per liter (IU/L). The level of HCG helps determine the age of the fetus.