California by Edan Lepucki

Twentysomethings Cal and Frida have been living alone in the forest following the collapse of American society. After leaving their home in Los Angeles, they spend their days tending to their vegetables and foraging for food with only each other for company. When Frida discovers that she's pregnant, she and Cal realize that they must travel to the Spikes, a local collective that might let them join and help ensure that their baby is born safely. Instead they find that it provides them with more questions than answers and a level of uneasiness and distrust.  Have Cal and Frida made the right decision leaving the home they made for themselves?