Kerri Walsh Jennings is pregnant for a third time

Kerri Walsh Jennings looks on during the Women's Beach Volleyball Gold medal match on Day 12 of the London 2012 Olympic Games on Aug. 8, 2012, in London.

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(CBS News) Olympian Kerri Walsh Jennings is pregnant for a third time.

The 34-year-old beach volleyball player revealed Monday on NBC's "Today" that she and her husband Casey Jennings are expecting a baby in April, which means she was pregnant while competing at the Summer Games.

Pictures: Kerri Walsh Jennings
Pictures: Celebrity baby bumps

"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," Walsh Jennings said.

Jennings said they started trying to get pregnant a month before the Summer Games in London, thinking it would take a little longer to conceive.

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Baby bumps

While competing at the Olympics, Walsh Jennings said she started feeling "moody and touchy."

"You're probably pregnant," fellow beach volleyball player, Misty May-Treanor, told her. And apparently she was.

"I thought it could have been the stress of the games and travel kind of throws your schedule off, but I knew," Walsh Jennings told co-host Matt Lauer. "At some point, you're late and then you start feeling something. And I definitely started feeling something in London."

Walsh Jennings and her husband are already parents to Sundance, 2, and Joseph, 3.

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Kerri Walsh Jennings

As for beach volleyball, Walsh Jennings has big plans for the Rio Games in 2016. "I want it," she said about taking home a fourth gold medal. "I feel like I have so much more to learn, so much more to accomplish. I'm planning on coming back stronger and smarter."