Kirsty will give birth at the Rovers Return next month in the aftermath of another huge argument with Tina McIntyre (Michelle Keegan).
The scenes see Tina lose her temper upon hearing that she could be left homeless, as a scheming Kirsty has informed house-hunter Julie Carp that Jason Grimshaw is selling his flat.
Gumede told All About Soap: "Tina just goes mad and Kirsty continues to goad her, while playing innocent to the rest of the pub.
"Tina grabs Kirsty and there's a scuffle - it's not a proper fight, but Kirsty falls back on to a table. Tina just wants to make Kirsty listen, because she keeps walking away from her and laughing."
Just after the row has turned physical, both women get more than they had bargained for as Kirsty's baby is suddenly on the way.
Gumede continued: "It becomes apparent immediately that the baby is coming - the pain is acute and her waters break. Marcus is there and, as a midwife, he's able to recognise that this tot is going to come pretty quickly.
"Kirsty's a very strong character and she's a tough cookie, while Marcus is great. Tyrone turns up as well, which helps immensely."
After welcoming their daughter Ruby at the pub, Kirsty and Tyrone are taken to hospital with the newborn - and are relieved to hear that mum and baby will both be fine.
However, Tina is left feeling more outcast than ever as the Weatherfield residents are not taking her side in the long-running feud.
Gumede said: "Tina's painted as the bad guy - from the outside, it looks like she's attacked a pregnant lady. But Kirsty won't be happy until she knows where Tyrone is every minute of the day."
Coronation Street airs Kirsty's labour scenes on Sunday, September 9 on ITV1. Get the Inside Soap magazine on your iPhone or iPad