I'm working up until EDD or I deliver. So approx 54 working days. Or up to 64 working days (how depressing).
Though, we have to use a week of PTO before our benefits kick in. I get paid STD for 6 weeks if vaginal delivery, so if I work up until I delivery, I don't know if that gives me 6 or 7 weeks off. If it only gives me 6, I may see about leaving a week early if I'm going to lose my vacation week as part of my 6 weeks.
I can take up to 12 weeks, but only 6 weeks is paid after delivery (though STD will kick in prior if I'm signed off, so maybe it'll be worth taking off early?).