This is an informal recording of a talk I gave to about 30 college girls, many of whom are anticipating marriage in the next year or two. It's a general overview of fertility in light of nutrition, thyroid, blood sugar, and other factors, presented from the Catholic perspective of sexuality within marriage. 

Audio quality is better in the first hour or so. Full transcript at https://www.brightfamilies.com/post/fertility-talk-for-college-girls