Melissa Benn’s Madonna and Child: Politics of Modern Motherhood is very good, although a few years old now. I read Naomi Wolf’s Mis-conceptions, which attempts to do the same, but found it offensively bourgeois and relying predominantly on anecdote rather than data for issues like the health of the pregnant woman.
Sarah Blaffer Hrdy’s Mother Nature is supposed to be an absolutely fantastic demolition of the idea of the innate maternal instinct from an anthropological point of view. Other books I haven’t yet read include Susan J Douglas’s Mommy myth, Ann Crittenden’s The price of motherhood, and Amy Richards’s Opting in: having a child without losing yourself.
A friend absolutely RAVED about FM Deutsch’s Halving it all: how shared parenting actually works, which I think is more of an actual parenting manual than the previous books!