Negative pregnancy test in morning positive at night

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01/4Morning vs Night

The decision of when to take the pregnancy test to get an accurate result can at times be a major source of anxiety. Whether you are eagerly waiting to get pregnant or you don't want to get pregnant, in both cases, the last thing you want is an inaccurate result. Most of us rely on a home pregnancy testing kit to get the primary confirmation, only after this we opt for proper lab testing. Urine home pregnancy tests are about 99 per cent accurate. But at times it can be influenced by factors like the irregular menstrual cycle, low hormone level, lifestyle factors and others. According to popular belief, taking a pregnancy test in the morning is the best as the chances of getting a false negative is higher at night. Here we have tried to figure out how much truth is there in this claim.

02/4​Can you take a pregnancy test at night?

It is alright to take the pregnancy test at night, but whether doing so can be a reason for the negative result or not is yet unclear. That's because the home pregnancy test responds to the level of human chorionic gonadotropin (hCG) present in your urine. The hormone is produced by the placenta and by the tenth day of the ovulation, the amount of hCG reaches a level where it can be easily detected by a home test kit. Taking the test in the morning is mostly recommended because of the concentration of the urine. Since you would not have drunk water or pee at night, the level of hCG will be higher in the urine and it will be easy to detect if you would be pregnant. At night, your urine would be diluted and the level of hCG would be low, leading to negative pregnancy.

03/4​What to do if you test negative at night

The at-home pregnancy test kit mostly gives accurate results, but the chances of getting a negative pregnancy still remain. If you are trying to get pregnant or witness any pregnancy-related symptoms and your test kit shows a negative result, we recommend you to take another test in the morning or after a few days. Several things can influence your result and can give a negative result like taking a test too early, not following the direction and others.

04/4​The best time to take a pregnancy test

The best time to take the pregnancy test is after your period is late. Some test kits show positive results within 4 or 5 days before your period is due. But taking the test after a missed period is better to get a more accurate result and avoid false negatives. In case of irregular menstrual cycles, wait 35 to 40 days before taking the test. Taking the test in the morning is more preferred over the night to get an accurate result.

The time between when a woman suspects she might be pregnant and when it is confirmed for sure is the longest of her life. Regardless of whether you are hoping for a positive or a negative result, the odds are good that you are sweating bullets when the time to read the pregnancy test finally comes. And the wait isn't necessarily over upon seeing a result the first time; many women take the test several more times just to be certain. So what happens if you get a different result the next day? Can a pregnancy test change overnight? The answer is yes.

Why would a negative pregnancy test turn positive overnight?

Not only can you get a negative pregnancy test result followed by a positive, but you can also get a positive test result and then a negative. If you take an at-home pregnancy test one morning to find a negative result, it could mean that you’re not pregnant, or it may be that you’re taking the test too early. To wrap your head around this further, it’s helpful to know what pregnancy tests are even looking for. At-home pregnancy tests display results based on the level of human chorionic gonadotropin hormone (hCG, the pregnancy hormone, detected in your urine). If your numbers are elevated, the pregnancy test will show a positive result. If not, you’ll see a negative result. Most doctors recommend that you wait until after your missed period to take an at-home test, which can be difficult to do if you’ve been trying to conceive for some time. The reason why it helps to wait is because hCG increases throughout your first trimester, so the earlier you take the test, the higher the margin for error because you haven’t given your body enough time to hit the minimum amount of hCG needed to trigger a positive test result.

So the explanation for a negative test changing to positive overnight is pretty straightforward and simple. But what about a positive test changing to negative? What does it mean?

Why would a positive pregnancy test turn negative the next day?

Dr. Yvonne Bohn, an OB-GYN with Los Angeles Obstetricians and Gynecologists in Santa Monica, California, explains to Romper that this is likely a sign of a chemical pregnancy. "A chemical pregnancy is a very early pregnancy that usually ends about a week after the missed menstrual cycle," explains Dr. Bohn. "In a chemical pregnancy, the hormones of pregnancy are very low and the pregnancy doesn’t develop. The body recognizes and induces a very early miscarriage which is like a delayed menses.”

In cases of chemical pregnancies, Dr. Bohn explains that the pregnancy test result will usually be a faint positive the first time but the follow-up tests will probably come out negative. Makes sense if the amount of the specific chemical the test is detecting in your urine drops when the pregnancy is not viable. Additionally, you will often know that the pregnancy is failing because of menstrual-like bleeding. She says that medical care is usually not necessary in such instances, as the bleeding should be like a heavy period and then end, but if you experience severe pain or heavier bleeding, you should be seen by a physician.

Let’s be clear: The miscarrying of a chemical pregnancy has nothing to do with what you did or didn’t do, and it is not your fault. Bohn explains that the pregnancy is not genetically normal so it simply does not continue to grow, and that’s why your body will induce a miscarriage on its own. Yet this can understandably be an emotionally distressing experience for any person to go through, especially if she was celebrating being pregnant only the day before. She also shares that the chance of miscarriage may be reduced by taking proactive measures if you are trying to conceive, such as taking prenatal vitamins or folic acid, avoiding high substance use, and controlling preexisting medical conditions effectively.

For many women, one at-home pregnancy test is not enough to confirm that they are pregnant (there’s a reason why test brands don’t advertise themselves as being 100% accurate, after all), let alone that the pregnancy is healthy and will be carried through. Sure, a subsequent pregnancy test (or more) a couple days later can confirm (or contradict) initial results, but the best way to get the most accurate reading is to call your medical provider to get a blood test, followed by an ultrasound. At-home tests are an advancement certainly convenient for the modern woman, but we have to remember that they should be backed up by a professional.

Expert:

Dr. Yvonne Bohn, OB-GYN with Los Angeles Obstetricians and Gynecologists in Santa Monica, California

This article was originally published on Feb. 18, 2018

Can a pregnancy test be negative in morning and positive in evening?

Can you test positive for pregnancy in the morning and negative in the afternoon?