I got asked a question via email about what’s the biological basis for how sex in pregnancy plays out. The short answer is I know in a vague general sense, but pregnancies are so variable that individual advice is all but impossible.
Lets come at it from the other side of the equation first. The clutch-the-pearls and cut to commercial dramatic insight is that one of the most likely times for a husband to cheat on his wife is during her pregnancy. This makes perfect sense in that the biological point of sex for the man is to get the woman pregnant. Once she’s actually pregnant its “Mission Accomplished” and being the cads that we are the biological cross hairs start looking for other targets. Like her sister. Or the wife next door. Or a babysitter. Or any of the 53 women he accidentally messaged on Ashley Madison.