It took five surgeries over two years for Olivia Munn to beat bilateral breast cancer in 2024, but she just confessed that her battle with postpartum depression after her son Malcolm Hiệp Mulaney was born in 2021 felt even worse.

The 44-year-old actress said her anxiety kicked into high gear when she ‘could not make any breast milk’ even after hiring three lactation coaches, and ‘nothing was fitting’ as she struggled the shed baby weight.

‘When you stop breastfeeding immediately, your hormones drop, and postpartum can come in like a tornado,’ Olivia (born Lisa) recalled in her SELF Magazine cover story on Thursday.

‘And I didn’t clock any of that and I didn’t tell anybody about that. Then it was like I fell off a cliff, and I was just falling and falling and falling and falling. It was more difficult than going through cancer.’

Munn compared the physically crippling feeling to having sprained her knee as husband John Mulaney had to hold her arm from ‘room to room.’

‘My eyes pop open at 4am I’m gasping for air. I get the тιԍнтness in my chest, and it’s like that all day long,’ the Your Friends & Neighbors actress explained.

It took five surgeries over two years for Olivia Munn to beat bilateral breast cancer in 2024, but she just confessed that her battle with postpartum depression after her son Malcolm was born in 2021 felt even worse (pictured in 2022)

‘It felt like the end of the world. It was like when you watch a horror movie — the worst, scariest horror movie you can think of — that’s how my body felt.’

Olivia added: ‘I really tested John’s patience. And thank God he’s the most patient person and can really take a lot.’

And while it only took one year before Munn flaunted her incredible post-baby body in a ʙικιɴι on Instagram, she previously thought it would be impossible while comparing herself to women who’d ‘had babies around the same time.’

Read More Olivia Munn reveals which male co-star asked her to ‘bite’ him

‘I reached out to some of them. And I’m like, “How are you in these Valentino shorts and this crop-top just running around LA and having the energy to take all these beautiful pictures?”‘ the half-Vietnamese beauty marveled.

Last year, Olivia underwent a partial hysterectomy where her uterus, fallopian tubes, and ovaries were removed – so she and the 42-year-old comedian hired a Mᴀssachusetts-based surrogate from an agency to carry their daughter Méi June Mulaney.

‘The surrogate’s still in our life. She was a better pregnant woman than I ever could have been,’ Munn said.

‘She’s an incredible mother, an incredible human being, an incredible friend, just wonderful. I needed [her] to understand that I needed to go this route. It wasn’t for superficial reasons or because I wanted to put my work first.

‘I’m not saying that any of those reasons aren’t valid for those people. And I’m not judging anyone who makes those decisions based on that, but I needed her to understand this would be hard for me.’

The Daily Show alum took on her first acting gig in five years as Jon Hamm’s onscreen lover Samantha ‘Sam’ Levitt in Jonathan Tropper’s nine-episode drama Your Friends & Neighbors, which premieres this Friday on Apple TV+.

The 54-year-old Emmy winner portrays Andrew ‘Coop’ Cooper, a hedge fund manager who resorts to petty theft after losing his job and divorcing his wife in the critically-acclaimed drama, which has already been renewed for a second season.

Your Friends & Neighbors also features Amanda Peet, Hoon Lee, Mark Tallman, Lena Hall, Aimee Carrero, Eunice Bae, Isabel Gravitt, and Donovan Colan.

The 44-year-old actress said her anxiety kicked into high gear when she ‘could not make any breast milk’ even after hiring three lactation coaches, and ‘nothing was fitting’ as she struggled the shed baby weight (pictured in 2022)

Olivia recalled in her SELF cover story on Thursday: ‘When you stop breastfeeding immediately, your hormones drop, and postpartum can come in like a tornado. And I didn’t clock any of that and I didn’t tell anybody about that’

She continued: ‘Then it was like I fell off a cliff, and I was just falling and falling and falling and falling. It was more difficult than going through cancer’ (pictured in 2023) 

Munn compared the physically crippling feeling to having sprained her knee as husband John Mulaney had to hold her arm from ‘room to room’ (pictured in 2022) 

The Your Friends & Neighbors actress explained: ‘My eyes pop open at 4am I’m gasping for air. I get the тιԍнтness in my chest, and it’s like that all day long. It felt like the end of the world. It was like when you watch a horror movie’ (pictured Thursday)

And while it only took one year before Olivia flaunted her incredible post-baby body in a ʙικιɴι on Instagram, she previously thought it would be impossible while comparing herself to women who’d ‘had babies around the same time’ (pictured in November 2022)

Last year, Munn underwent a partial hysterectomy where her uterus, fallopian tubes, and ovaries were removed – so she and the 42-year-old comedian hired a Mᴀssachusetts-based surrogate from an agency to carry their daughter Méi (pictured September 22)

The half-Vietnamese beauty admitted: ‘The surrogate’s still in our life. She was a better pregnant woman than I ever could have been’ (pictured January 14)

Olivia took on her first acting gig in five years as Jon Hamm’s onscreen lover Samantha ‘Sam’ Levitt in Jonathan Tropper’s nine-episode drama Your Friends & Neighbors, which premieres this Friday on Apple TV+