You’re on other medsįertility meds aren’t the only drugs that could potentially mess with your test results. Again, it’s another really good reason to hold off testing for a full week after your missed period. This is especially likely to be the case if you take the test too early. These shots prompt the follicles in your ovaries to release an egg, but they can also cause an OTC pregnancy test to give you a false positive. If you’re undergoing fertility treatments, your doctor might prescribe a synthetic hCG trigger shot like Novarel, Pregnyl, Ovidrel, or Profasi. Some digital tests use readouts like “Pregnant” or “Not Pregnant” instead of lines, which research shows are less likely to get misinterpreted. But if you really want to steer clear of this potential debacle, just pick a different pregnancy test. Especially if the line is totally colorless.įollowing the test’s directions to the letter can help you avoid evaporation lines. But it can also just be an evaporation line - a meaningless line that forms after your urine has evaporated completely. Sometimes a faint second line can mean that you’re pregnant. The lines are usually bright blue or bright pink, but the second line can occasionally be faint. Some pregnancy tests use two lines to show a positive result (and just one line to show a negative one). So if you were to try again to conceive shortly after having an abortion, your test might read positive by mistake. ![]() It can take up to 6 weeks for the hCG from your previous pregnancy to clear out of your system. ![]() You recently had an abortionĪbortions can cause subsequent false positives for the same reason that miscarriages can. So, if you were to try again to conceive shortly after a miscarriage, it’s possible for a test to pick up hCG from your previous pregnancy and give you a false-positive result. HCG can be detected in a woman’s blood for up to 6 weeks after a pregnancy loss. The body’s hCG levels start to drop back to pre-pregnancy levels after a miscarriage, but it doesn’t happen overnight. Ectopic pregnancies are health emergencies and they can damage your reproductive system if untreated. If you notice any of these symptoms, seek medical help ASAP. You might have an ectopic pregnancy if your test reads positive but you’re experiencing sharp waves of abdominal or pelvic pain, sharp pain on one side of your abdomen, spotting or bleeding, dizziness or fainting, or pressure in your rectum. But early on, they can still cause the body to produce hCG and lead to a false-positive reading. ![]() These pregnancies aren’t viable because an egg can’t thrive and grow outside of the uterus. You have an ectopic pregnancyĮctopic pregnancies are pregnancies that occur when a fertilized egg implants itself somewhere outside of the uterus - like one of the fallopian tubes, the cervix, the abdomen, or the ovaries. But they’re an important reason why it’s worth waiting at least a week after your missed period to take a pregnancy test: Holding off that long will reduce the chances that you get a false positive from any hCG that’s still in your system. The pregnancy is lost super early, and most women never even realize they happened.īut they can cause the body to start producing hCG, which could get picked up on a pregnancy test and cause a false-positive reading.Ĭhemical pregnancies are common and often occur for no reason. You had a chemical pregnancyĬhemical pregnancies happen when a fertilized egg is unable to implant or grow. (Feels like an eternity, WE KNOW.) Tests are less accurate when taken before that, which means you could be more likely to get a false positive or false negative. Though it can be tempting to take one the second you suspect you might be pregnant, it’s better to wait until a full week after your missed period. Pregnancy tests are most accurate when you follow the manufacturer’s directions exactly. Here’s a look at the most common causes: You took the test too early So what kinds of things can confuse your pregnancy test and cause it to erroneously give you some life-changing news? 9 causes of a false-positive pregnancy result
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