A Month of Due Dates
(a reflection on the two-year anniversary of my son’s ‘due date’–but not of his birthday, which won’t happen for another two and a half weeks …)
“When are you due?”
That’s pretty much the first question people ask, right? As in,
pregnant woman: Hey! I’m pregnant!friend/relative/co-worker/near-stranger: Congratulations! When are you due?pregnant woman: On [insert super-specific and official-sounding date here]. We’re really excited!friend/relative/co-worker/near-stranger: Wow; that’s great. Do you know what you’re having yet?pregnant woman (according to personality and sarcasm level): We don’t know yet. OR A little boy! OR A little girl! OR Gee, I don’t know; a human baby, we hope.
The thing is, though, that the ‘due date,’ or Estimated Date of Delivery (EDD), or EDC (Estimated Date of Confinement), is an incredibly problematic little piece of information. For most people, it’s a
flat-out guess at the date that would be 38 weeks (266 days) after the date of conception, or (even less reliably) 40 weeks after the first day of the pregnant woman’s last menstrual period. The little
wheel-of-due-dates is based on Naegele’s Rule, which was developed in the 1830s; some studies have suggested that other methods of dating (including Nichols’ Rule and the much more nuanced Mittendorf-Williams Rule) are more accurate.
If you don’t keep track of your ovulation and sexual encounters and can’t remember exactly when you started your last period because you are freakin’ busy or not good with dates, or if you have an unusual or irregular menstrual cycle that means you don’t ovulate when Textbook Female Body ovulates, the due date is more fantasy than reality.































