Thiswas never the plan for D'Leanne Lewis.

"When you're little, you don't think 'I'm going to be a single mum. I'm going to freeze my eggs,'" the star ofLuxe Listings Sydneyshares with Mia Freedman on this week's episode ofMamamia'sNo Filterpodcast.

"And I never had that game plan to be a single mum at 50," she adds.

"But I tell you what, I don't think I've ever been happier in my entire life than I am right at this moment, because I've done the hard yards to get here. I'm experiencing happiness in a deeply authentic way that is not on anybody else's terms."

Listen to D'Leanne Lewis full interview with Mia Freedman on No Filter . Post continues after.

While the pregnancy is not the first for Lewis - she is mum to daughters Nava, seven, and Myka, four - it is the first time she has used an anonymous sperm donor.

Just the other day, one of her girls asked, "Who is the daddy of the baby?".

"And I said, 'it's a lovely man who lives in South Africa'. She doesn't know what the word 'anonymous' means, so she thinks his name is Anonymous. It's really cute... and a conversation that we'll have to have sometime in the future!"

The road to this point has been long for the real estate dynamo - choosing to freeze her eggs 15 years ago, at the age of 35.

Reflecting back on that time, Lewis says she knew that she wasn't yet ready for motherhood.

"I was engaged three times, by the time I was 35. And it always felt for me like I was like a square peg being put into a round hole. It never felt like it was something that I wanted to do. You've got a boyfriend, he asked you to marry him and you go 'yeah', but you're not really 100 per cent there, and then you start with the wedding plans and you go... 'Oh sh*t'."

But after leaving her third fiancé and being in her mid-30s, Lewis understood this would be her last chance to freeze her eggs.

Then she was engaged a fourth time - and married - giving birth to her first child at the age of 42.

Both daughters were conceived through IVF, but the process included a number of failed attempts and sadly, a miscarriage too.

"There was talk about are you never going to be a mother, those kinds of things really hurtful. And no one knows how painful those processes can be. Then someone that's been trying and trying and failing and failing, you really do feel like a failure," Lewis tells Mia.

And while her marriage ended years ago, Lewis knew she still wanted one more child.

"If I didn't do it now, I wouldn't be able to do it."

So, in January this year, she flew back to her home country, South Africa, to be inseminated with sperm from a donor. She stayed one night before returning to Sydney.

It was a success.

And on September 27, just a few days after recordingNo Filter, Lewis gave birth to her third daughter, Lyra Yvonne Lewis.

Swimming against the tide.

At the age of 10, Lewis, together with her sister and parents migrated from Johannesburg, South Africa to Australia.

"We came here with nothing," Lewis recalls. "Our church gave us a box of toilet paper, toothpaste, and things like that."

"We come from a very ethnic culture South African. It's very much [about] family, and I love that."

But it wasn't always smooth sailing.

Growing up in a devout Seventh-Day Adventist family, Lewis began pushing the boundaries in her mid-teens.

"[It was] very strict. No makeup, no jewellery. No rock music, No sex before marriage."

Her first act of rebellion was piercing her ears.

"And I thought f*** it. If I'm going to hell, I'm going to hell on a highway."

Drinking and smoking followed. And then at 18, Lewis decided to move out of the family home with her boyfriend - much to the chagrin of her parents.

Their often polar outlooks have coloured the relationship between Lewis and her parents throughout her adult years, even until today.

But it's not so binary either.

On learning that Lewis had decided to use a sperm donor to conceive her third child, her father expressed his disapproval.

"He said, 'You know I don't agree with it'... And I said, 'I don't think you've agreed with anything that I've ever done in my life - but thank you for supporting me anyway'."

"And I think that is the essence of family, right?" muses Lewis. "They don't have to agree with what you do. But a good family will always support you throughout your journey, and that's what I have unconditionally from them."

"They've never agreed with the crazy things that I've done. But I've always known I've been deeply loved. And if things go wrong, I know they always reach out to them, despite their judgement, they will still love."

Finding faith.

Lewis also respects the fortitude that faith has imparted on her father throughout South Africa's Apartheid years.

"Instead of being hateful, he's loving and always taught me about when someone treats you badly, imagine just pouring coals of kindness on them. And it frees you. He's taught us about not getting angry, but having our happiness is the best revenge."

And the respect for faith is reciprocated - despite Lewis' father's disappointment towards her rejection of a lifestyle according to the values of the Seventh Day Adventist church.

Because 12 years ago, Lewis found religion - just, a different one.

She converted to Judaism.

Lewis recounts the conversation where she broke the news to her father.

"That's great!, he said, Because you're coming back to God. And that's the way he saw it... He's come to shule (synagogue) with me, he does Shabbat (observes the Sabbath) with us."

Lewis had discovered Judaism through the one man that she married. And while they eventually split - her newfound Jewish identity firmly remained.

"For me, [the connection] felt real, authentic, and something that I would take on in a real sense."

With her ex-husband being the grandson of Holocaust survivors, Lewis said she also felt it was "important to keep that bloodline going for them".

"I just loved my rabbi... The temple was so welcoming, and the sense of family and forgiveness and food and celebration, was so joyous," Lewis says, adding, "And it's always good to never leave a Jewish house hungry!

"I just felt belonged."

Navigating divorce.

It was when Lewis was pregnant with her second child that she decided to end her marriage.

She shares the moment of life-defin