My brother did the same type of thing years ago. He sold computers and he did it on the first Macintosh. He had it also print out a chart of the contractions. This was about 21 yrs ago since I think his son is that old now. (maybe 20, never get that right)

Anyway, he said the doctor just looked at him funny when he showed up with graph in hand. He even made the news paper at the time which I think was pushed in part by apple. It was good advertising for the Personal in PC and he had written the program in their latest and greatest programming language.