11 h 33 m, 1 mar 2002 año - At week 4, miscarriage is called a chemical pregnancy since the embryo cannot be detected on ultrasound, only through blood and urine testing. Signs of miscarriage include cramping, spotting, and heavy bleeding.
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https://www.healthline.com/health/pregnancy/pregnancy-week-4Añadido al timeline:
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11 h 33 m, 1 mar 2002 año
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