Dear emadg and architect, the one thing i can tell you is that according to
unofficial rules they will not request a passport before the delivery of the baby. Somewhere in the Passport Request should be mentioned (not sure cause have not received yet, but read somewhere previous posts) that "pregnant woman should not send their passports for visa". And if at the border, while landing, appear to be pregnant and without documents for the baby (as their cannot be issued before the baby
they can refuse you landing.
There is several reasons for such attitude: 1) the baby should be born healthy (if delivering in Canada they cannot refuse you and they don't like it). 2) Crossing the border and being pregnant is like not paying for one family member (lost revenue).
If someone has proof of inverse, please post!