Birth trauma!

Whitney is trapped with guilt-ridden Lauren when her waters break…

Now that Bianca knows Zack cheated on Whitney with Lauren, it’s only a matter of time until the truth spills out.

With Zack having failed to confess his actions, this week Lauren’s forced to tell her best mate herself – but fate has other ideas…

When everyone gathers in The Vic for Zack and Whit’s fancy-dress ‘sten do’, the couple aren’t in the mood. Zack’s guilt is eating him alive and his pregnant fiancée has had a run-in with Bianca.

Furious that Bianca has let Britney misbehave, Whit tells Bianca that she’s no longer her maid of honour and asks Lauren instead!

Bianca’s blood boils and she warns the cheating Branning to own up or else she will…

‘Lauren’s treading on eggshells because she doesn’t want Whitney to find out, but she also doesn’t want to push Bianca so that she reveals it in front of everyone in true Eastenders style!’ explains Jacqueline Jossa, who plays Lauren. ‘There aren’t too many people who Lauren is scared of, but she is of Bianca, and Whitney, too.’

Chickening out, Lauren ends up bad-mouthing Zack, which causes a row.

So Penny locks the friends in Bianca’s borrowed taco van to talk it out! However, as Lauren braces herself to confess her betrayal, Whitney’s waters break…

‘Her first thought is that she has to try to keep Whitney calm, and the second is that they need to get out of there – they don’t want Whitney to have a baby in a van. There’s also the horrible thought that she might have to deliver Whitney’s baby, having slept with her fiancé,’ adds Jacqueline.

How will the messy saga pan out?