How do you date a pregnancy?
It was recently reported that Arizona had changed its abortion law to be the most restrictive – but it hadn’t. It had just joined other states in making the limit 20 weeks gestational age. This description of pregnancy dates is the accepted convention – but many articles picked up on that initial two weeks of nothingness in gestational age and confused it with embryological age. Was this an example of details without understanding of the greater context?
Context is important. Facts in isolation can lead to confusion.
For more details on the different ways to describe pregnancy dates, please read more.