Depending on the cause of your lack of menstruation, you could ovulate again at any time. Consequently, you could get pregnant and not realize it since you won't miss a period. If your period is one to two weeks late, and you still are getting negative pregnancy tests, a visit to your gynecologist for a pregnancy blood test is recommended. Depending on your circumstances, many providers will want to induce a "period" if you go more than two or three months without menstruating.
If your cycle used to be regular but has become irregular, or your periods are irregular for more than three months after stopping birth control, you should see your provider. Irregular cycles can be a risk factor for infertility. A missed period combined with a negative pregnancy result can be confusing but there are a number of explanations. Most often, if you aren't pregnant, your period is just a bit late.
If you are pregnant, it's likely you didn't wait long enough before taking the test. Regardless of the cause, don't ignore worrisome symptoms. Get diet and wellness tips to help your kids stay healthy and happy. Gnoth C, Johnson S. Strips of hope: Accuracy of home pregnancy tests and new developments.
Geburtshilfe Frauenheilkd. Human chorionic gonadotropin in pregnancy diagnostics. Clinica Chimica Acta. Seeber BE. What serial hCG can tell you, and cannot tell you, about an early pregnancy. Fertil Steril.
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Updated August 25, Use of clomiphene citrate in infertile women: a committee opinion. What causes amenorrhea? Reviewed January 31, Irregular menstrual cycles in a young woman.
Clinical Chemistry. Three consecutive false negative pregnancy tests in a twin pregnancy: A case report. The Internet Journal of Gynecology and Obstetrics. Your Privacy Rights.
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We and our partners process data to: Actively scan device characteristics for identification. I Accept Show Purposes. Table of Contents View All. Table of Contents. False Negative Pregnancy Test. Pregnancy Test Errors. Rare Causes of a False Negative.
When to Call Your Provider. Stay Calm Mom: Episode 2 Watch all episodes of our Stay Calm Mom video series and follow along as our host Tiffany Small talks to a diverse group of women and top doctors to get real answers to the biggest pregnancy questions. Is a Negative Pregnancy Test Definitive? An Overview of Home Pregnancy Tests. What Is Amenorrhea? To be safe, test earlier in the morning to avoid any confusion.
If you get a negative pregnancy test after having previously had a positive test result, you may be having a miscarriage —especially if you are also having abdominal cramping and vaginal bleeding and if you notice the loss of any pregnancy symptoms such as fatigue, nausea, and sore breasts.
There is a chance that one of the issues above might be affecting the accuracy of your second pregnancy test if you are still in very early pregnancy. When in doubt, call your doctor's office for advice. 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.
Get diet and wellness tips to help your kids stay healthy and happy. Adams Hillard, PJ. Menstruation in adolescents: what's normal. Medscape J Med. The effect of physiological urine dilution on pregnancy test results in complicated early pregnancies.
Br J Obstet Gynaecol. Chaudhry K, Siccardi MA. Blighted ovum, anembryonic pregnanc y. In: StatPearls [Internet]. StatPearls Publishing; updated September 25, Your Privacy Rights.
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This can affect the timing of HCG production and when it can be detected. If your periods are irregular, you might miscalculate when your period is due. If it's important to confirm your pregnancy right away and depending on how far along you are in your pregnancy, your health care provider might recommend that you have an ultrasound, repeat a urine test at a lab or have a blood test to measure your HCG levels.
With most tests, you place the end of a dipstick in your urine stream or dip the dipstick in a container of collected urine. A few minutes later, the dipstick reveals the test result — often as a plus or a minus sign, one line or two lines, or the words "pregnant" or "not pregnant" on a strip or screen.
Follow the test instructions for how long to wait before checking results — usually two or more minutes. Most tests also have a control indicator — a line or symbol that appears in the result window.
If the line or symbol doesn't appear, then the test isn't working properly. Try again with another test. Some home pregnancy tests are more sensitive than others. In other words, the amount of HCG needed to be detected in the urine to produce a positive test result is lower in some tests. Always check the test's expiration date and read the instructions carefully before you take the test.
Many home pregnancy tests claim to be 99 percent accurate. However, home pregnancy tests differ in the ability to diagnose pregnancy in women who have recently missed a period. If you have a negative test but think you might be pregnant, repeat the test one week after your missed period or talk to your health care provider. Fertility drugs or other medications that contain HCG might interfere with home pregnancy test results.
However, most medications, including antibiotics and birth control pills, don't affect the accuracy of home pregnancy tests. Although rare, it's possible to get a positive result from a home pregnancy test when you're not actually pregnant. This is known as a false-positive. A false-positive might happen if you had a pregnancy loss soon after the fertilized egg attached to your uterine lining biochemical pregnancy or you take a pregnancy test too soon after taking a fertility drug that contains HCG.
An ectopic pregnancy, menopause or problems with your ovaries also might contribute to misleading test results. 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. You might get a false-negative if you:. There is a problem with information submitted for this request.
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