The couple shared their news on June 9 in an emotional Instagram post where the Loose Women star revealed that they had struggled to conceive and were starting to lose hope when they found out the happy news.
She wrote: “We are growing another pickle. We’ve never felt so grateful… I have no words. We didn’t think we would get the chance.
“We love you all to the moon and back. Lots of love From Me, Joe, Harry, Zach, Leighton, Rex, and our little pickle”.
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While Stacey hasn’t personally shared her due date, she’s believed to be around 13 weeks pregnant which would make her due early next year.
The new arrival will have four older brothers – Stacey and Joe’s son Rex, and their children from previous relationships, Leighton, nine, Zachary, 13, and Harry, 14.
Stacey is very good friends with new mum Mrs Hinch who could be lined up as a possible godparent.
Reports had been swirling for a while that Stacey and her partner of five years were trying for a second baby.
“They are pining for another baby, and after celebrating Rex’s second birthday last week, it reminded them how fast he’s growing up,” a source told Closer.
“It made them realise how they don’t want to leave it too much longer before giving him another sibling.
“Stacey also joked how she needs a flower girl in the wedding line-up, to balance out the page boys!”
The 31 year old is set to tie the knot to the former EastEnders actor, 39, at their sprawling £1.2million Essex mansion in July after they got engaged on Christmas Eve last year.
Earlier this year Stacey joked that Dancing on Ice 2020 winner Joe was “100 per cent trying to get [her] pregnant again” after she filmed him cleaning the windows as she arrived home.
When the couple shared the happy news on social media they explained it hadn’t been an easy journey – with ‘quite a few’ losses before she reached this point.
Stacey shared a photo of a negative pregnancy test, writing: “For a really long time we’ve been trying for another pickle… It didn’t work out and this was our news quite a few times…
“We decided we were so lucky already to have our boys. It is our biggest privilege in life and we are so grateful to be parents so we stopped trying and counted ourselves so so so blessed already..
Stacey then followed it up with a photo of her and Joe’s hands entwined, writing: “For while now I’ve felt so yuck and even though I thought about what it felt like I didn’t even want to go and check at first because well, just because, you know (I don’t even like to write it).
“But yesterday we went to check what was going on… And we were so grateful to hear an extra heartbeat my tummy”.
Congratulations Stacey and Joe, we can’t wait to follow you on your journey!