babymoon n. a planned period of calm spent together by a just-born baby and its parents; occasionally, time spent by parents without their baby; (hence) a vacation or holiday taken by a pregnant woman and her partner. Editorial Note: The latter meaning is on the rise in the travel industry. Etymological Note: Sheila Kitzinger claims to have coined the word. (source: Double-Tongued Dictionary)
Further reading
In a sweaty letter to a friend while vacationing on the island of Elba, poet Dylan Thomas wrote colorfully and expressively about a terrible heat wave, complaining that, among other things, “My brains are hanging out like a dog’s tongue...
A Kentuckian named Sheila moved out of state for several years, but now that she’s returned to work at Western Kentucky University, she finds that many students no longer seem to have a stereotypically “Southern” accent...
2008 Boston Globe also cited the BabyMoon in their article Getaways before the kids
http://www.boston.com/travel/articles/2008/05/18/getaways_before_the_kids/
And BabyMoon luxury pre-birth getaways http://www.baby-moon.eu launced a site dedicated to luxury Babymoons