Pulos, 44, announced the exciting news with a sweet pic of herself posing on a couch with her 3-year-old daughter, Alianna. In the snap, Pulos wore a white T-shirt emblazoned with the words "Lil sis" over her burgeoning belly, while her mini-me wore a matching "Big sis" top and blush pink tutu.
"Miracles are everywhere!" Pulos captioned the photo, which also featured pink balloons in the background. "Thanking God and everyone whose kindness and support helped more than you will ever know ❤ #LoveHelpers."
"Finding out that I was pregnant again was one of the happiest moments of my life," Pulos told ET. "We are thankful and blown away that this dream came true. It was (and still is) an uphill climb that was treacherous, yet so worth the fight and persistence for our family and our daughter."
"A year ago, I had a miscarriage followed by many failed attempts to get and stay pregnant," she continued. "If you are reading this and feel disheartened by your struggle, I ask you to fight and keep walking forward like the champion that you are. Spirituality can beat science. Miracles happen. Find the right doctor who will guide you and be your advocate. Don't lose faith, and walk through the dark moments one step at a time with grace. Never lose hope, your thoughts are powerful."
Prior to the announcement, Pulos was not shy about discussing her struggles with infertility on the ninth season of her Bravo show. The reality star also took to Twitter last October to send a message to "all the #IVF warrior mamas out there."
"Keep on keepin' on!" she wrote, asking her followers, "What's your source of encouragement?"
To all the #IVF warrior mamas out there...keep on keepin' on! What's your source of encouragement? ❤️❤️❤️