I'm trying to plan when to start my mat leave. On the one hand I want to maximise my time after the birth when I think I'll need it most (esp if the baby is late), on the other hand my manager and other people have warned me that I might need to start earlier as I shouldn't underestimate how tired I'll get when I'm big. I don't want to end up sitting at home too big to do anything useful getting bored for weeks. What are you all doing?