But The Saturdays singer is struggling already with her growing belly after revealing she's suffering from heartburn.
JLS star Marvin Humes' wife took to Twitter to complain of her discomfort, posting: "Well... was gonna sleep. Heellooo heartburn. Eww".
But with the help of her followers and some trusty tips she soon cured her pain, updating them all on her condition.
She tweeted: "You guys have very good tips. Off for a glass of milk and a gaviscon x"
It's no surprise that Mini Marvelle is starting to give Roch some discomfort, as recent snaps show the singer's bump really starting to grow.
The 23-year-old was snapped outside Capital FM radio station yesterday with the rest of her bandmates Mollie King, Frankie Sandford, Vanessa White and Una Healy wearing a bright knit jumper and jeans.
The girls are currently on the promo trail for their new single 'What About Us', which is currently riding high at Number 1 on iTunes - and looks set to be their first ever top charting track.
Meanwhile back to baby business and Mollie King exclusively told omg! that she is the last person Roch will be asking to babysit.
She told us: "I don’t know [if she’ll ask me to babysit] to be honest with you because she has seen how bad I am with babies.”
[Related story: Rochelle Humes says her baby will be lanky]
[Related story: The Saturdays chase their first ever number one]
[Related story: Mollie King says she'd be a terrible babysitter]