The second link in the OP makes these points.
This billboard portrays Mary, Jesus' mother, looking at a home pregnancy test kit revealing that she is pregnant. Regardless of any premonition, that discovery would have been shocking. Mary was unmarried, young, and poor. This pregnancy would shape her future.

It could have added that she faced being stoned to death for conceiving while unmarried, and that she would have been barely 14, or even just 12 or 13.