How will Zack react when she breaks the news to him?
When Zack is reminded of his financial obligations to Whitney and their baby, he tries to help her without her knowing, by asking Kat to give her the buggy she needs without revealing he bought it. And Kat can't understand why Zack won’t be there for the baby.
At Peggy’s, Zack is worried as to why Sam stayed in Walford and panics about the cause of her stress. When he tries to probe further, Zack says too much and a suspicious Sam realises the text from the GUM clinic was about Zack. And he tells her he’s HIV positive.
When Whitney experiences spotting, she panics and Kat offers to go with her to the hospital to get checked out. At the hospital, Dr Lane tells Whitney that her ultrasound has flagged up a situation with the baby.
Meanwhile, Sam finds Zack to talk about his diagnosis and how she can be there for him and he admits he’s feeling deep shame and terrified about the stigma surrounding HIV. When he reveals that he’s not picked up his meds, Sam is furious and advises him to be honest with Whitney.
The next day, Whitney is dazed after yesterday's news and when Zack doesn't return her calls, she's surprised when Kat suggests that she shouldn’t write him off yet, and let's slip about the buggy.
Later, Kat collars Zack, and he tells her he’s going to Whitney’s place straight away. After he profusely apologises, Whitney reveals the news about the baby.
EastEnders continues Mondays to Thursdays at 7.30pm on BBC One