Nursery!

Hey ladies... I was just wondering when most of you started/finished the nursery? I can’t wait to start mine my whole family is wondering what I’m waiting for but my MIL is pretty much saying that we should wait until after the baby is born.... am I the only one thinking that it’s weird for her to say that? My boyfriend and I can’t wait to get started but every time we visit her she always reminds us that the crib shouldn’t be built until after baby is here.