11h 33min, mar 1, 2002 y - 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-4Added to timeline:
Date:
11h 33min, mar 1, 2002 y
Now
~ 23 years ago