@fannycann I think you're right that the word 'theatre' is used quite loosely. In this particular case, though, the woman was having a hysterectomy, so would have to have been impregnated either preop (thus whilst fully conscious) or after being anaesthetised but prior to surgery. She'd also been on testosterone for a number of years and was almost certainly infertile.
I guess she could have theoretically walked into theatre pregnant, but one would like to think that, when doing an elective hysterectomy on a woman of childbearing age, you'd get them to pee on a stick pre-op.
It just seemed really odd to put ectopic pregnancy in the differential for post-op bleeding in those circumstances, when there were so many more likely causes. It's proper hearing hooves and thinking unicorns territory.
(In the unit I work in, stage one recovery has no curtains, deliberately, so that a patient deteriorating is spotted fast. Stage two is wards, with curtains, but I don't think I've ever seen them closed. There's always plenty of nursing staff about. Whilst I recognise some predatory men can be very crafty, I really don't think it would be possible to rape a patient at any stage of the process. I say that more for reassurance for any woman having surgery than out of relevance to this topic.)