Phew! @Nicole327
Done, dusted, all in a day's work! So sorry for the 24 - 48 hours of pandemonium.
I doubt you would have the ill luck of another crazy situation so hopefully you can happily put this behind you.
Just to speak to your point of how to prevent something similar in the future without adding a rule along the lines of "guests prohibited from giving birth on the premises (!)," I'll share what I've done in the hope that it may help spark some ideas from you or anyone else.
My first house rule states no visitors beyond the booked party, no solicitation, no events/parties, no exceptions.
Stiff, yes, but helpful in two ways:
(i) prevents bookings from guests who had these intentions thereby preventing problems even before they happen (works when guests read the rules prior to reserving. Has also worked after the fact e.g. one time, a booked guest cancelled after reading that visitors would not be possible)
(ii) it locks out "just a friend" who turns out to be hordes of partiers, overnight guests of the commercial kind, surreptitious mid-wives (not to make light of your experience at all), and all the other usual suspects.
Presuming, of course, that these individuals are not "booked in" from the start, though sneaky guests are unlikely to actually book a mid-wife/overnighters/partiers, especially for an extended period.
I know this isn't fail-safe and that it may not work for those with a more relaxed/open hosting style so it's merely a suggestion/idea prompt.
Any other takers?
Happy hosting,
Betty