The fifth-season The Bachelorette star revealed on social media Thursday she's expecting her second child with fiance Justin Pasutto.
"Baby #2!!!!! Beyond grateful, excited and FULL of love for this next stage of our lives! I've been so excited to tell you guys EVERYTHING... the last 3 months have been... interesting... obviously exciting but SO sick and exhaustion I never knew was possible," Jillian captioned a photo on Instagram.
The photo features Jillian and Justin relaxing in bed while their smiling and perky 20-month-old son, Leo, was rocking his "Big Bro" T-shirt and throwing his little arms up into the air. The family's dog, Nacho Cilantro, was also sprawled out on the bed.
"The first trimester beat the crap out of me! lol ... Thank you @justinpasutto for being SO patient with me, no more freshly cooked meals, 7pm bedtimes for mama, a messy house, piled up laundry, crabby, and unshaven legs... lol I've been a MESS but feeling so much better these days!!!!" Jillian continued in the post.
"MORE on the pregnancy on the Blog and a special vlog on our @youtube channel... Thank you ALL already for the love, support and ADVICE!!! We feel so lucky to have you all and be able to share this with you!!!!"
Jillian revealed to Us Weekly that the baby is due in the first week of October.
"We're so excited! Especially now that it's out in the open and I can talk about it to everyone," Jillian told the magazine. "I grew up as an only child so I can't wait to see the chaos that our house of four will be. I can't wait to see the family dynamic that we build."
Jillian revealed in her blog post that her doctor knows the sex of the baby but it's still a surprise to Justin and herself.
"We can't wait to find out if we're going to be having another boy or a little girl... actually, we have the results in a sealed envelope just sitting on our counter," Jillian shared, adding that the couple is trying to determine the perfect place and time to open the envelope.
Jillian insisted she just wants a healthy child, but she is hoping for a little girl deep down.
"I see the amazing bond Justin has with his brother," Jillian told Us. "And I love having all boys in the house with Justin, Leo and Nacho. But at the same time, there's no denying that I'd love a little girl. Every girl dreams of having a baby daughter to dress in cute clothes and put little pink bows in their hair."