Mortimer And Whitehouse Gone Christmas...
Film, Media & TV1 min ago
No best answer has yet been selected by gingerflaps. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.Ahh. the doc would just calculate it from the date of your last period until you were far enough along to get a scan, which gives them a more accurate idea. Here's a site that does it:
http://healthlink.mcw.edu/article/923526833.html
that just goes off the day of your last period.