You can even dig up 16th century dictionaries that were more nuanced than that. (Woman literally meant married one then. Maiden was used for unmarried. Wife cam

You can even dig up 16th century dictionaries that were more nuanced than that. (Woman literally meant married one then. Maiden was used for unmarried. Wife came later.) Current dictionaries mix the terms by the way. Sterile women were still women. As typically were some other accidents of nature like testosterone-resistant males. Language changes over time, and so we assigned the word woman recently more to a gender rather than social status or sex. Polish is more permissive in this particular "pregnant woman" alleged issue, we have a gendered noun equivalent "pregnant" or long form "woman in pregnancy". Though nobody is yet using form "man in pregnancy" or "pregnant man" except as a joke.