3D and 4D ultrasounds are optional. They're not standard prenatal tests. Doctors often give them as a courtesy to women who want them. Not all doctors have access to 3D or 4D ultrasounds. Also, your ...

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Gypsy-Rose Blanchard and her boyfriend Ken Urker posted photos from a 4D ultrasound of her daughter in an Instagram post on Tuesday, Oct. 22 Charna Flam is a writer-reporter at PEOPLE. She has been ...