Nicole announced Thursday on Instagram she's expecting her third child with husband Jionni LaValle.
The Jersey Shore: Family Vacation star posted a photo of her two children holding her sonogram and wrote alongside the photo, "What I'm thankful for this Thanksgiving."
After two-and-a-half years of being engaged, Nicole, 30, and Jionni, 31, tied the knot in New Jersey in late November 2014.
The pair have one son and one daughter together: Lorenzo Dominic, 6, and daughter Giovanna Marie, 4.
On the November 15 episode of Jersey Shore: Family Vacation, Nicole took a pregnancy test after a long day of drinking that resulted in her getting sick, according toPeople.
"I never throw up, even when I was little. So I'm like, okay, me and Jionni are trying to have a baby -- maybe I'm pregnant. I feel weird right now. I didn't eat anything to make me sick, so why am I throwing up now?" Nicole reportedly said during the broadcast.
"I want to take a pregnancy test. I just need to know, because if I'm pregnant, I'm not going to keep drinking. If I'm not, then f-ck it, I'm going to be upset and let's go take shots at the club."
Nicole, however, received negative test results at the time after co-star Jenni "JWoww" Farley accompanied her to a nearby drugstore.
"It's no," Nicole lamented, according to the magazine. "I'm not pregnant. I'm so annoyed. I'm just old and I can't f-cking hang anymore."
Nicole revealed to Entertainment Tonight in August 2018 she and Jionni were trying for Baby No. 3. In fact, she said they had been "practicing" for about one month at that point.
Nicole -- who began hosting the new MTV series How Far Is Tattoo Far? in October -- told People in 2016 she was looking forward to welcoming a third baby into the family. She told E! News in March of that year, however, she didn't want to have another little girl.
Nicole starred on Jersey Shore from 2009 to 2012 and later co-starred in the Snooki & JWoww spinoff with her best friend, JWoww. In 2017, she competed on The New Celebrity Apprentice and finished in thirteenth place.
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Jersey Shore: Family Vacationpremiered in April 2018. Season 2 of the series wrapped earlier this month on MTV.