UP ON THE NOOK: A Casual Vacancy by J.K. Rowling
I also found reading books about PPD was helpful for me. Here are some of those:
Down Came the Rain, by Brooke Shields
Therapy and the Postpartum Woman, by Karen Kleiman
I have also been reading, rather slowly, Buddhism for Mothers: a calm approach to caring for Yourself and your Children, by Sarah Napthali