DeAnna Pappas and Stephen Stagliano are expecting baby No. 2 in a little over a month, but the couple told ET they're not quite ready just yet!
"Physically we are ready," Pappas -- who joked that she's feeling "pretty large" -- told ET on Thursday. "Nothing else is ready."
"We have been laughing about this," Stagliano agreed. "It's much different [than] with our now-two year old. We were fully ready for everything."
The couple joined other Bachelor and Bachelorette alum to celebrate The Bachelor at 20, a special that will air on Valentine's Day. The show will catalog the 20 seasons of the reality dating show, culminating with the wedding of Bachelor in Paradise couple Jade Roper and Tanner Tolbert.
"At the last Bachelor wedding, I was also ready to pop," Pappas joked. "It's funny seeing everybody because they are like, 'You don't look that much different from the last time we saw you.'"
The pair, who met on season 11 of The Bachelorette, are also parents to daughter Addison, who just turned 2 years old on Feb. 6. Pappas said that having a toddler makes her second pregnancy a totally different experience.
"It's much harder than I expected. I'm really tired," she said. "By the end of the day, the last thing on my mind is prepping the new baby's room."
The couple also has yet to narrow down their list of name choices for their son -- the short list includes Oliver, Austin, and Flynn -- even though they had Addison's name picked out "before she was conceived."
"This baby is coming. There is no stopping it," the former Bachelorette, who is due in five weeks, added with a laugh. "But no, we are not ready."
The two are also coming to terms with being the more senior members of the "massive family" of Bachelor/Bachelorette alum -- especially when it comes time to party at the reunions!
"The people who are fresh off the show, they are like 23, 24, and they're all partying hard, staying up till 3 o' clock in the morning," Pappas recalled. "Stephen and I are like, 'Night!'"
The Bachelor at 20: A Celebration of Live airs Feb. 14 on ABC.