First, depending on how pregnant you are, you might not even be allowed to board a plane to Canada, or if you are, immigration might suspect something and deny you entry. Other than that, your child will be a Canadian citizen if born in Canada, and the hospital will issue a birth certificate. You will need insurance, and I don't know how much it'll all cost. You'll also need to apply for a passport and maybe a visa for the child to go back to your home country, so consider all of that in the time you need to spend in Canada.
