my rabbit built her nest 4 days ago she lined it with fur 3 days ago. She seems to be tending more to her nest today by lying in it and poking her nose around it what I am worried about is I don't know her due date I am assuming it would be some time here to this weekend she has some bald spots from pulling. How soon will they build a nest? She has been lining it for 3 days off and on. i dont know her due date. But noticed a very marked aggression since july 26th.