how long should i wait to take a pregnancy test after a negative result?
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Most pregnancy tests include instructions that encourage you to wait at least one week between a negative test and taking another pregnancy test. This is to allow time for your body to build up enough hCG (human chorionic gonadotropin) to be detected in your urine.
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The average time frame is around 19 days. Taking a pregnancy test within that period can result in a false-positive test. At times, a woman may have experienced an incomplete miscarriage. This condition means that there may be tissue from the pregnancy in the uterus that continues producing hCG.
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A very rare cause of a false negative is if the hCG hormone in your body doesn't react with the anti-hCG chemicals in the pregnancy test. If this is the problem, you may need to wait a few more days before you can get a positive result. Or, you may need to have a blood test.
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It takes about 2 weeks for your hCG levels to be high enough to be detected in your urine using a home pregnancy test. A positive home test result is almost certainly correct, but a negative result is less reliable. If you do a pregnancy test on the first day of your missed period, and it's negative, wait about a week.
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You should wait the full 3 minutes to confirm a 'Not Pregnant' result. It does not matter if one of the lines that make up the '+' symbol is lighter or darker than the other; the result is 'Pregnant'. Read your result within 10 minutes of doing a test.
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“If you're comfortable with the fact that you might get a false positive, you can take a home pregnancy test just 10 days after unprotected sex,” says Dr. Felice Gersh, a board-certified OB-GYN. “Sometimes pregnancy tests will turn positive by then. But keep in mind, that still is on the early side.”
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Your best bet is to wait to take a pregnancy test until about 19 days after fertilization in order for hCG to build up to a level that's detectable in your urine.
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Instructions on most pregnancy tests will tell you to read the results in a certain amount of time, usually from a couple of minutes up until 10 minutes later. So you may take a pregnancy test and read it within the above time period as negative.
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As Dr. Roshan explains, a woman's hCG level doubles every 48 to 72 hours, so if you really are pregnant, it won't be negative for long. Take another test in a few days—or around a week after your missed period—and you can trust the results.
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It can be tricky figuring out when to take a pregnancy test if you haven't been having a regular period. If you've had sex without a condom or birth control recently and you're worried you might be pregnant, the earliest you can take a pregnancy test (and have it be accurate) is 2-3 weeks after sex.
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How soon can you take a pregnancy test? You should wait to take a pregnancy test until the week after your missed period for the most accurate result. If you don't want to wait until you've missed your period, you should wait at least one to two weeks after you had sex.
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So you can't reuse digital tests, either. Generally speaking, you should read the results of a pregnancy test about 5 minutes after you POAS (pee on a stick in TTC-lingo) or dip it in urine and then discard it — and no pulling it out of the wastebasket an hour later, either!
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If you get a positive test result on the first day of your missed period, it's probably about two weeks since you conceived. Some pregnancy tests can also give an estimation of when you might have conceived based on the level of HCG too .
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A positive test result is almost certainly correct. A negative result is less reliable. 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 hasn't arrived.
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If the result is negative, it may be a good idea to take another test in a few days, to give hCG levels a chance to rise. Very few medications, including fertility drugs, may cause false positives. Otherwise, a positive result followed by a negative result a few days later could mean a very early pregnancy loss.
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A 'Pregnant' result may appear in 1 minute when testing from your missed period (which is the day after your expected period). Wait for 3 minutes to confirm a 'Not Pregnant' result or when testing before you have missed your period (See Q10). A blue line must be present in the control window when you read your result.
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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.