Leah, who has been dating Miles Copeland (Josh Quong Tart) in recent months, is left stunned by a positive pregnancy test result in scenes which air in Australia next week. However, her reaction to the news could threaten her relationship.
"At first, she doesn't know she's pregnant - she's just hormonal and being a bitch to Miles and needs time to herself," Nicodemou told TV Week. "When she does realise she's pregnant, she doesn't want it.
"That might be an unpopular choice for most people and it can be hard to understand where Leah is coming from, but she doesn't want to be put in that situation at all. She's not happy about being pregnant."
Discussing the impact on Leah and Miles, she continued: "It's a really interesting storyline for them. It makes everything serious because things have been quite light, so it's good to see that side of them. There are some rocky times ahead for them because there are differences of opinion."
Nicodemou explained that Leah's surprising attitude can be explained by delving into her past.
"The history behind all this is that Leah miscarried a few years ago with Dan and it had been a real struggle for her to fall pregnant," she said. "When she was pregnant, she was beside herself with excitement and then there was the miscarriage.
"Any miscarriage is heart-wrenching but she took it really badly and made a decision that she never wants to have kids again."
Home and Away is currently on its summer break in the UK but returns to Channel 5 in September.
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