Drinking too much liquid before testing, using an expired test or not storing it properly (pregnancy tests should be stored between 36° and 86°F) can also result in a false negative. If you think you're pregnant but the test result is negative and you tested early, test again on the day you expect your period.

Know this: All Clearblue® pregnancy tests are over 99% accurate from the day you expect your period. False positives very rarely occur, and are often due to medical conditions or certain medications. False negatives, while more common, typically occur due to testing too early or drinking too much liquid before testing.

too much or too little urine was applied. Test again using a new test, carefully following the instructions. If the Smart Countdown didn't appear after testing or started to run and then the screen went blank, you will need to perform another test. Test again using a new test, carefully following the instructions.

If you see a positive result beyond this time frame, you may be left second-guessing the results. However, always remember that a pregnancy test result is only accurate within 10 minutes. After the that, it's best to throw the test away to avoid confusion.

Anyone can have a cryptic pregnancy. You may be at higher risk if you: Recently gave birth: After you give birth, it may take several months for your period to return, and you may not ovulate if you're breastfeeding (chestfeeding). This can give people the false impression that they're completely safe from pregnancy.

Here are some of the more likely explanations: You are not pregnant, and your period is late for another reason (the most common explanation). You are pregnant, but the pregnancy hormones haven't built up enough yet to be detected. You are pregnant, but the test is not working correctly.

Clearblue Early Detection Pregnancy Test provides early detection of the pregnancy hormone. 71% of pregnancies can be detected 6 days before the missed period (5 days before the expected period) and 94% of pregnancies can be detected 5 days before the missed period (4 days before the expected period).

If you want to save time and money, your best bet is to wait longer than 12 hours before taking another pregnancy test. But there are a couple of scenarios in which 12 hours might make a difference: Your hCG level just happens to cross over your test's sensitivity threshold during that 12-hour time period.

If you see a control line (C) but don't see a test line (T), the test couldn't detect hCG pregnancy hormone in your urine. You either don't have enough hCG in your urine yet, or you're not pregnant. If you think you could be pregnant, test again in a couple of days.

If you're testing before the day of your expected period, you may see a negative result – even if you're pregnant – if: Your test wasn't sensitive enough for early testing. You didn't use the first urine of the day, so concentration of hCG in your urine wasn't high enough.

If you take the test and accidentally leave it sitting without reading the results, you can experience what looks like a positive result. In reality, it's likely what's called an evaporation line, a faint line that can occur when the test sits too long.

If a pink line showed up quickly, then it is likely a positive, pregnant result. If the line only showed up much later (say ten minutes or more) than the control line, it may be an evaporation line.