Photo: Danielle Marie Porter

Exclusive: Catherine Lowe Baby Bump

Catherine Giudici Loweis thinking pink.

“I had wanted to try for a girl and so that went through my head,” she says of the moments right after she and Lowe, 35,learned they are expecting again. “That went out the window! I thought, ‘Oh my gosh, I might have a third boy!’ And we won’t find out until it’s born. We’ve done that every time.”

Catherine Lowe/Instagram

Sean Lowe and Catherine Giudici Lowe

Although the couple are waiting to find out whether their sonsIsaiah Hendrix, 13 months, andSamuel Thomas, 3 next month, will be getting a little brother or sister, Giudici Lowe tells PEOPLE she feels “different” in her current pregnancy than in her previous two.

“[With] both boys, I had no symptoms — just a little bit tired, but no nausea. Now I definitely have more nausea. It’s something that I can tell. I’m hoping [having a girl is] what it means,” says the former reality star.

“I’m very tired, but that could be because I have a toddler and an infant too!” she quips.

The Lowe family.Catherine Giudici Lowe/Instagram

Sean Lowe Catherine Giudici Lowe

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Giudici Lowe — who’s due on New Year’s Eve — islooking forward to breastfeedingher newborn, an experience she lauds as “such a nice bond that you can’t experience with anything else.”

“I don’t know what that is going to be like, but it’s not scary because we know what to expect with the newborn phase,” the mom-to-be says. “I think we’ll handle it in stride. I’m sure I’ll have some breakdowns, but that’s expected. And I give myself grace on that all the time.”

Catherine Giudici Lowe.Danielle Marie Porter

Exclusive: Catherine Lowe Baby Bump

For more on Sean and Catherine Giudici Lowe, pick up the latest issue ofPEOPLE, on newsstands Friday.

source: people.com