I am always turned off by such indescreet, though sometimes pious, "wanderings of the imagination".
Just like this movie that just came out, "The Nativity".
I don't want to see Mary going to Shopko and buying a pregnancy test. Nor do I want to meditate on details that are best left reverently obscure, as God meant them to be (they aren't in Scripture for a reason!)
I hope you understand what I mean. Some things are best passed over out of reverence and respect.
P.S. I'm sure Mary doesn't buy a pregnancy test in the movie, but she DOES get accused of breaking her vow of virginity -- and nobody can be sure that actually happened.