can you get a negative pregnancy test while on birth control?
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Causes of an incorrect test result. Though pregnancy tests are highly accurate, there's still room for error. A few issues can affect your results, but your birth control pill isn't one of them. The hormones in your birth control pill don't affect a test's ability to detect hCG.
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If the test result is negative, you may not be pregnant. However, negative results are less reliable. For example, if you do a pregnancy test too early, you could be pregnant, but there may not be enough HCG in your body to give a positive test result.
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However, if you do conceive while taking a progestin-only birth control (minipill), there's a slightly higher chance that the pregnancy will be ectopic. As a precaution, if you suspect you're pregnant, take a home pregnancy test. If the home pregnancy test is positive, stop taking the pill.
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"If you do a pregnancy test before you miss your period, the result may be negative with a urine test but positive with a blood test." Early pregnancy tests aren't usually necessary, but they can make a difference for women at higher risk for miscarriage or ectopic pregnancy.
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False Negative Pregnancy Tests In fact, it is possible to have a negative result on a pregnancy test and actually be pregnant. Here is how it works: The goal of a urine pregnancy test is to test the urine for a hormone called hCG (Human Chorionic Gonadotropin).
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The hormones in your birth control pills won't affect a pregnancy test's outcome. However, some birth control pills affect the lining of your uterus. The hormones in birth control pills thin the lining. This makes it difficult for a fertilized egg to attach.
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Negative test results If the test result is negative, you may not be pregnant. However, negative results are less reliable. For example, if you do a pregnancy test too early, you could be pregnant, but there may not be enough HCG in your body to give a positive test result.
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A Word From Verywell. If your period is late but your pregnancy test is negative, there are a number of possible explanations. Call your doctor if you believe that you are pregnant. They may perform a blood test, which can detect not just the presence of hCG, but the amount.
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If your period is very late, or you've skipped your period, and you get a negative result, you are unlikely to be pregnant. If you are testing before the date of your expected period, you may be pregnant but your hCG levels are too low for the test to detect.
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It is more than 99% accurate. Thus, if your test is negative, it means that you are not pregnant; However, if you are very early in your pregnancy and the test is done too early, there could be insufficient amount of hCG in the urine for the test to detect.
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If you think you may be pregnant after a missed period but got a negative result on your pregnancy test, wait a few days. Then retest. If you continue to miss your period, be sure to talk to your doctor to rule out any complications.
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However, while these early detection tests work for most people, every woman is different, and the quantity of the pregnancy hormone hCG doubles every 2 to 3 days. So, the short answer is yes, it's absolutely possible to record a negative result after missing your period, even if you are pregnant!
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A negative pregnancy test is still most likely to mean you're not pregnant. But if you really believe you are pregnant and have pregnancy symptoms (here are 41 early pregnancy signs in case you're not sure), there's a chance you may be right.
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Most medicines, over-the-counter and prescription, including birth control pills and antibiotics, should not affect the results of a home pregnancy test. Only medicines that have the pregnancy hormone hCG in them can give a false positive test result.
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Neither estrogen or progesterone impact pregnancy tests. Taking a pregnancy test at the wrong time can absolutely cause a false negative. While many tests claim they can reveal a pregnancy before a missed period, this is not the case for all women.
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It's possible to get a negative result from a home pregnancy test when you're actually pregnant. This is known as a false-negative.
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Some women get a negative test, and then later test positive for pregnancy. If this happens, believe the positive test. ... If the test is negative, or you continue to get a mix of positive and negative pregnancy tests, it could mean you are having a miscarriage or that your HCG levels are very low. Call your doctor.