In response to my article about Rielle Hunter's chances of having a baby at 43 , a reader asks how researchers determine a woman’s chances of becoming pregnant each month, especially when they don’t know when or how frequently she is having intercourse. Since a woman is only fertile about three days a month, the stat assumes she’s had sex during this window. About two weeks into a woman’s menstrual cycle, her ovaries release an egg into one of her fallopian tubes during the process of ovulation. The egg must be fertilized within 24 hours to result in a pregnancy. Here’s how the reproductive ballet becomes more complicated: Sperm can live in a woman’s reproductive tract (in the cervical mucus, specifically) for at least two days and wait for the egg to be released. Dr. Richard Paulson, a fertility specialist at the University of Southern California Medical School, advises his patients trying to conceive naturally to have sex on the day of ovulation or the two days prior.
TODAY IN SLATE
Justice Ginsburg’s Crucial Dissent in the Texas Voter ID Case
The Jarring Experience of Watching White Americans Speak Frankly About Race
How Facebook’s New Feature Could Come in Handy During a Disaster
The Most Ingenious Teaching Device Ever Invented
Sprawl, Decadence, and Environmental Ruin in Nevada
You Should Be Able to Sell Your Kidney
Or at least trade it for something.
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- Supreme Court Allows Texas Law That Accepts Handgun Permits but not College IDs to Vote
An All-Female Mission to Mars
As a NASA guinea pig, I verified that women would be cheaper to launch than men.