Feeling so big and tired. How can some women work until due date?!

I am scheduled to leave work 1 week before my due date. Idk how women do it. We need the money so I cant really afford to leave sooner. I'm taking up to 12 weeks leave. But lord! I'm so tired already and feeling so big. Also have so much to do at home in preparation and just not enough time! I have no idea how to get everything done I've started just prioritizing the most important things on my to do list because I dont think I'll get to it all.