She has now introduced Lorenzo Dominic on the cover of People magazine.
Polizzi, who spoke to the magazine with her fiancé Jionni LaValle, explained: "It's a different kind of love that I never felt before."
She also suggested that she has matured over the last few months, saying: "When I got pregnant, everything changed. The partying is long gone. I'm a new person."
Polizzi recently described being a mum as an "amazing feeling", though she joked that life post-birth "isn't so comfy or glamorous".
She has also revealed that she enjoys breastfeeding, while Anderson Cooper reportedly sent her a gift to celebrate the birth of her son.
Polizzi will star in the upcoming sixth season of Jersey Shore, which MTV has confirmed will be the last. The show will premiere on October 4 on MTV.