Please excuse me if I'm being too flippant, but I'm trying to make a point here: Another way of making quick money is by robbing a bank. Just making the point here that your logic is lacking, not that pregnant women are bank robbbers.
The logic of: "Babies are expensive, therefor I cannot stay unemployed for 6 months before I find a job" seems completely sound and reasonable to me. Where is that logic lacking? What practical alternative would you propose?