BTW: assuming that you are a landed Immigrant or citizen, you shall have been assigned/registered with a GP already (if not, go find one immediately). A GP will then refer you to an OB/Gyn who shall oversee your pregnancy period (checkups, etc.) and also responsible for making an appointment to his/her designated hospital for you and also deliver your baby.
Don't try jumping the queue by personally approaching the hospital in hopes of making appointment for delivery. Things don't work this way in Canada healthcare systems.