The Olympian who jumped and smashed her way to victory with longtime partner Misty May Treanor, admits she discovered she was expecting shortly after returning home from London.
She tells American breakfast show Today, "When I was throwing my body around fearlessly, and going for gold for our country, I was pregnant, and today I'm 11 weeks pregnant."
And she confesses she had her suspicions: "I'm a pretty happy girl and I was unreasonably moody. I thought it could have been the stress of the games and travel kind of throws your schedule off, but I knew. At some point, you're late and then you start feeling something. And I definitely started feeling something in London."
Jennings and her husband Casey already have two sons, Joey, three, and two-year-old Sundance.