Snooki, 26, has already said that she wants to keep fit and healthy throughout this pregnancy, which is her second, and has been doing regular gentle exercise.
Last night (23 April), after working up a sweat, Snooki posed for a picture while cradling her very small baby bump.
Posting it on Twitter, she told her followers: "Just got in a good workout with my new buddy."
Earlier this month, Snooki announced that she and her fiancé Jionni LaValle are expecting their second baby together.
The couple are already parents to son Lorenzo - who was born in August 2012 - and, following his birth, Snooki lost more than 2st in weight.
After telling fans their news, Snooki recently spoke about this pregnancy in her blog and admitted that she was craving strawberries and crisps.
She added: "The one thing I'm going to change about this pregnancy is that I am going to stay active and keep working out because I'm getting married soon after I have my second baby.
"My lifestyle right now is very healthy so I'm going to continue with that while I'm pregnant. I am going to be working out safely."
Couples who have announced baby news in 2014:
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