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Usually two scans are done during the first trimester.A dating and viability scan, between six and nine weeks and an early morphology scan or NT scan between 11 and 13 weeks.It is possible to see twins (or more) from about six weeks, though one baby may be missed at this early stage.Sometimes a heartbeat is seen in one sac but not the other.
Between 11 and 13 weeks, and preferably at 12 weeks, you will probably have a nuchal translucency scan.
Although you don't need a scan to confirm a pregnancy, having one in the early weeks will: But scans can also be quite worrying.
Speak to your doctor if there are things you don't understand or if you have any concerns after the scan.
A vaginal scan is done by introducing a probe into your vagina. Abdominal scan After 10 weeks and for the rest of your pregnancy, you will have an abdominal scan.
However, if the doctor needs to check your cervix (mouth of uterus and birth canal), a transvaginal scan may be done as it is more accurate.
There are two ways of doing a first trimester scan: Transvaginal scan (TVS) If your doctor wants you to have a scan earlier than 10 weeks of pregnancy, you will have a transvaginal scan.