It's about 24 Sim hours.
Oh cool, she'll be able to preform her gig and not have to worry about anything. She got pregnant at 10 pm or 11 pm and the gig is from 4 pm to 7 pm.
Edit: Thank you so much, I don't have to worry about her ''showing'' during her gig.
Edit: I totally forgot that gigs start the next day after your Sim gets them and she's showing now. More like I forgot she got pregnant the day she got the gig.