can you tell if your having twins before scan?
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Ultrasound. Although the factors above may be signs of a twin pregnancy, the only sure way to know you're pregnant with more than one baby is through an ultrasound. Some doctors schedule an early ultrasound, around 6 to 10 weeks, to confirm the pregnancy or check for issues.
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Multiples Can Be Tricky to Detect However, most women who spontaneously conceive twins, triplets, or more won't begin to suspect anything out of the ordinary until their pregnancy progresses. But there are some hints that show themselves as early as the first trimester.
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Do Identical Twins Have the Same DNA? Although two fetuses develop simultaneously in superfetation, they differ in maturity, having been conceived days or even weeks apart. Superfetation is observed in animal reproduction, but it is exceedingly rare in humans. Only a few cases are documented in medical literature.
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The only way to confirm a twin or multiple pregnancy is by visually identifying the multiple fetuses with ultrasound. If your doctor or caregiver can only see one baby, it is not likely that you're having twins or multiples.
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When twins are born, the physician is usually able to identify whether twins are identical or fraternal by examining the placenta; identical twins generally share a placenta, while fraternal twins are usually in two separate placentas.
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It is impossible to definitively know whether you are carrying twins (or multiple babies) by simply gauging how you feel or going off of what a home pregnancy test shows. In fact, only an ultrasound can confirm a twin or multiple pregnancy.
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An ultrasound scan is the only way to confirm that you're pregnant with twins (McAslan Fraser nd, NICE 2011). The earliest you're likely to find out is between 10 weeks and 14 weeks, when you have your dating scan (McAslan Fraser nd, NHS 2019, NICE 2011). Ultrasound is almost foolproof at diagnosing twins.
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At seven weeks, the embryo's heartbeat can be detected through an ultrasound scan. A heartbeat is the first sign of a healthy and live foetus. The mother's reproductive health is checked. Through an ultrasound scan at 7 weeks, twin or multiple pregnancy can be detected in the form of multiple gestational sacs.
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It's usually possible to find out for certain if you're having twins at your first ultrasound scan. This is done as part of your routine antenatal care at around 8 to 14 weeks of pregnancy.
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Ultrasound scan The most common way to find out whether you're having a girl or a boy is at your 20-week ultrasound scan (anomaly scan). This is usually offered between 18 and 21 weeks of pregnancy. Sometimes, however, it's not possible to find out the sex at the anomaly scan.
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The only sure way to find out if you're pregnant with twins is at your first ultrasound appointment at around 10 weeks.
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At this stage, it's likely you have an ultrasound scheduled if you haven't already had one. Some people report showing earlier when pregnant with twins, but the point at which your pregnancy begins to show varies depending on the person and the pregnancy. Many people will show earlier during their second pregnancy.
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If you are using a regular pregnancy test (not the super-sensitive variety) and get an immediate positive (especially a very dark positive indicator) a few days before your period is due, there may be an increased chance that you are carrying twins.
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Specifically, twin and multiple pregnancies might have 30-50% higher hCG levels than singleton pregnancies. Even so, a detection of high hCG levels can't reliably predict twin pregnancies. That's because hCG levels vary greatly between each woman, and there's a wide range of normal levels.
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The earliest you're likely to find out is between 10 weeks and 14 weeks, when you have your dating scan (McAslan Fraser nd, NHS 2019, NICE 2011). Ultrasound is almost foolproof at diagnosing twins. However, if you're carrying more than two, it gets harder to tell how many babies you're expecting.
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We get 50% of our DNA from each parent, so only identical twins have the exact same DNA. So unless you're an identical twin, your AncestryDNA® test results will likely be different to your sibling.
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Ultrasound can tell us a lot about a pregnancy, but it's not always perfect. This is particularly true in the early months. Though it is rare, it is possible to have a "hidden twin" who is not visible during early ultrasound screenings.