Very Bad Parents by Amy Meitz

In 1964, sixteen-year-old Joan survives the crudest form of savagery: a botched abortion. What follows is a series of painful complications, leaving her traumatized and emotionally scarred. Plagued with guilt and longing for redemption, Joan convinces herself that the baby she lost is still with her, an obsession bordering on delusion.
Jack is devastated when his girlfriend confesses to having a back-alley abortion behind his back. Tormented by the loss of a baby he never knew existed, he is hell-bent on vengeance. After tracking down the man who performed the procedure, he exacts his revenge and considers the matter to be settled. Jack remains loyal to Joan, and the couple are married two years after the incident. Eager to start a family, the Smithfields are blessed with a healthy baby boy. Sadly, not everyone is meant to be a parent.