The Jersey Shore star and fiancé Jionni LaValle announced in March that they are expecting their first child later this year.
"I guess [pregnancy] just made me more mature," Snooki explained to People.
"It's different because now I'm not drinking. I'm usually partying and going to clubs but pregnancy made me grow up a lot."
It was reported last month that the 24-year-old and fellow Jersey Shore castmate Mike 'The Situation' Sorrentino are in danger of being phased out of the programme as her pregnancy and his rehab stint will keep them from providing entertainment through drinking.
Snooki recently confessed that she is proud of her pregnancy cleavage, saying: "I got swagger with my pregnant self."
Watch a promo for the fifth season of Jersey Shore below: