Rycroft, 33, announced she was expecting last November.
"This is definitely the last one...probably... #partyoffive #babyonboard #maybethisonewilllooklikeme," she captioned a sweet family photo.
The former Dancing with the Stars champ rose to fame as a fan favorite on season 13 of The Bachelor, when she was chosen by Jason Mesnick in the season finale, though the two later split when Mesnick explained he still had feelings for runner-up Molly Malaney. Mesnick and Malaney married in 2010.
Although, Rycroft couldn't appear happier with her hubby, Tye Strickland, who she's been married to since 2009. ET spoke to Rycroft in May 2014, when she shared the candid dating advice she has for her children.
"There's no denying that [I was a hot mess]," she laughed. "I just want to be honest. I wish growing up, my parents would have shook me a little bit and said, 'What are you doing? You're strong, you're independent, you're your own person.' I want them to be better than I was -- especially my daughter."
"I wanted love so badly, you know?" she further admitted. "And I didn't just date and have fun being single at 22. And now I'm like, 'Why didn't I have fun being single and 22?!' … Now, my husband enjoyed that time a lot. If there was a happy medium between where I was at 25 and where my husband was at 25, that's the mix I want for my kids."