The 38-year-old actress revealed as much in the March issue of Redbook. Faris went into labor at seven months pregnant in August 2012, and recalled the scary time for the magazine interview.
"I was in denial [at the time]," she admitted. "For hours I was like, 'I'm just having indigestion. Chris and I were so scared, but then Jack came out. Even though he was so tiny, he looked so good to us."