Arie Lukendyk Jr., Pregnant Lauren Burnham Have Baby Name Fears

So much pressure! Arie Luyendyk Jr . and his pregnant fiancée, Lauren Burnham , are terrified that they will choose a bad name for their child.

“Then they get made fun of for the rest of their life,” Burnham, 26, told Us Weekly exclusively.

Quipped the season 22 Bachelor: “We’re like, ‘Man, we gotta give [the baby] a non-nerdy name.’”

The reality stars, who got engaged during ABC’s After the Final Rose episode in March, are on the same page when it comes to what they will put on the baby’s birth certificate.

“I think we want it to flow,” the race car driver explained to Us , “which is hard with my last name, to be honest.”

LAUREN BURNHAM, ARIE LUYENDYK JR.

Us Weekly exclusively broke the news on Wednesday, November 14, that Luyendyk, 37, and the real estate agent are expecting their first child together.

Though the couple definitely want more than one kiddo, Burnham has changed her timeline after suffering from terrible morning sickness. “I just had the most miserable month of my life,” she told Us . “So I was excited at first to have a bunch of kids back-to-back, but I think we’re gonna see how the first one goes and then decide after that.”

The Arizona-based pair know the sex of their baby and plan to announce whether it’s a boy or a girl around their upcoming January 12 wedding.

“We have to be careful not to slip!” Luyendyk told Us .

The parents-to-be both had a feeling about whether they are having a son or a daughter. “We were correct,” the Bachelorette alum shared. “But I think either way, we’re so excited. I think we both were not really leaning one way or the other.”

Burnham, who spent October dealing with all-day nausea, has her fingers crossed that she has permanently turned a corner. “Over the past week I’ve started feeling better,” she told Us . “It’s nice to have my energy back.”

With reporting by Emily Longeretta and Carly Sloane