In the second trimester of pregnancy, you may be offered to have an morphology scan anomaly scan. Obviously, every pregnancy is unique and individual factors influence the size of the embryo at this early stage, and the embryo shows development week by week. This is because although every little embryo is unique, there are still defining characteristics of development which apply to all embryos at particular stages of early gestational development. The screening test for Down's syndrome used at this stage of pregnancy is called the "combined test". Work out when you're most fertile to increase your chances of getting pregnant with our easy-to-use ovulation calculator.
Check with your ultrasound clinic for any preparation you need to do prior to the scan.
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