Home pregnancy tests work by detecting the presence of human chorionic gonadotropin (hCG) in a urine sample. There are a few things that can cause a false negative reading, namely the improper use of the test, testing too early, using an
expired test
, or diluting the urine by drinking too much water in advance.
Can anything affect a positive pregnancy test?
It's possible to have a positive pregnancy test even if you aren't technically pregnant
. This is called a false positive. It's sometimes caused by a chemical pregnancy. A chemical pregnancy occurs if a fertilized egg, known as the embryo, is unable to implant, or grow, very early on.
What can cause a false negative pregnancy test?
- Take the test too early. The earlier after a missed period that you take a home pregnancy test, the harder it is for the test to detect HCG . …
- Check test results too soon. Give the test time to work. …
- Use diluted urine.
Can anything you eat or drink affect a pregnancy test?
Drinking water—or any fluids
—can, in fact, affect the results of an at-home urine pregnancy test, especially when taken very early in the pregnancy. When your urine becomes diluted by drinking lots of fluids, it takes on a pale yellow or clear color, and the urine concentration of hCG becomes lower.
Can I be 2 months pregnant and have a negative test?
By two months, a negative pregnancy test almost always means that
your period is late for a different reason
. Although hCG levels rise to a peak and then fall again, they're usually still climbing until the end of the first trimester.
What happens if you pee too much on a pregnancy test?
The hook effect
happens when you have too much hCG in your blood or urine. How is this possible? Well, the high levels of hCG overwhelm the pregnancy test and it doesn't bond with them correctly or at all. Rather than two lines saying positive, you get one line that incorrectly says negative.
Is a very faint line on a pregnancy test positive?
If you take a home pregnancy test and the results reveal a
faint positive line
, there's a strong possibility that you're pregnant. Some women see a clearly distinguishable positive line after taking a home test. But in other cases, the positive line appears faded.
What symptoms do you feel when your pregnant?
- Missed period. If you're in your childbearing years and a week or more has passed without the start of an expected menstrual cycle, you might be pregnant. …
- Tender, swollen breasts. …
- Nausea with or without vomiting. …
- Increased urination. …
- Fatigue.
Can drinking a lot of water dilute a pregnancy test?
Don't drink too much water
, or any liquid, before taking a pregnancy test. Excess fluids can impact the accuracy of the test results, so if your urine is diluted or pale yellow, hold off on taking a test. Diluted urine tends to also have diluted hCG levels which can skew the test results.
What is best time to do pregnancy test?
- If you're trying to get pregnant, the best time to take a pregnancy test is one week after you've missed your period. …
- Home pregnancy tests can be used as early as the first day after your first missed period in women with regular/predictable monthly menses.
When should you not 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.
Can you be one month pregnant and test negative?
The simple answer is yes,
you could still be pregnant even with a negative test
, depending on when you took it, but there are also other reasons your period could be late. A pregnancy test detects HCG levels in your urine which increase the longer you are pregnant.
Can I be pregnant and still test negative?
Is it possible to be pregnant and get a negative pregnancy test result?
Yes, it is possible
. Getting a negative result doesn't mean you're not pregnant, it may just mean your hCG levels are not high enough for the test to detect the hormone in your urine.
Can I still be pregnant if the test is negative and no period?
could i still be pregnant? If you take a pregnancy test after your period is
late and get a negative result, you're unlikely to be pregnant
. Home pregnancy tests are very accurate — about 99 percent — but a false negative is still possible. Try taking another pregnancy test in a day or two to double check.
What are some unusual signs of early pregnancy?
- Nosebleeds. Nosebleeds are quite common in pregnancy due to the hormonal changes that happen in the body. …
- Mood swings. …
- Headaches. …
- Dizziness. …
- Acne. …
- Stronger sense of smell. …
- Strange taste in the mouth. …
- Discharge.
