Olivia Munn, 43, reveals she had a hysterectomy during her battle with breast cancer: 'I had a real breakdown'

Olivia Munn has had a 'full hysterectomy' in her ongoing cancer fight, just two months after revealing her double mastectomy.

The actress said she underwent the fifth surgery of her breast cancer battle last month in a bid to see more of her two-year-old son's childhood.

'I have now had a full hysterectomy. I took out my uterus, fallopian tubes, and ovaries,' Munn, 43, told Vogue in a profile for Mothers' Day.

'Doing a full hysterectomy was a big decision to make, but it was the best decision for me because I needed to be present for my family.'

The Newsroom star who is married to comedian John Mulaney said she took the decision after being given a choice between the hysterectomy and taking anti-hormone medicines that would have left her bedridden.

'I did have one real moment of panic,' she said.

'A real breakdown. Because it's just so strange when you've been with this body your entire life, had your period for so long, feel when you're ovulating, and all of a sudden it's gone.'

She was diagnosed in April last year just two months after she and her sister Sara tested negative after a genetic analysis that checks for 90 genes associated with cancer.

We called each other and high-fived over the phone. The same winter I also had a negative mammogram,' she revealed in March this year.

'Two months later I was diagnosed with breast cancer,' she revealed.

'The biopsy showed I had Luminal B cancer in both breasts. Luminal B is an aggressive, fast moving cancer.

'Thirty days after that biopsy I had a double mastectomy. I went from feeling completely fine one day, to waking up in a hospital bed after a 10-hour surgery the next.'

'In the past ten months I have had four surgeries, so many days spent in bed I can't even count and have learned more about cancer, cancer treatment and hormones than I could ever have imagined.'

She and Mulaney, 41, were able to create two 'healthy embryos' after her latest round of egg retrieval although the hysterectomy means she will not be able to carry any more children.

'It's interesting because my 33-year-old eggs were great. My 39-year-old eggs? None of them worked,' she said.

'As you get older, one month can have great eggs, the other not so much. Clearly, the month we did at 39 was not a good month.

'After my diagnosis, we decided to try one more round of egg retrievals and hoped it was a good month. 'John and I talked about it a lot and we don't feel like we're done growing our family, but didn't know if I would have to do chemotherapy or radiation.'

The former Daily Show correspondent was up on her feet for just a few weeks after her latest operation before spraining her ankle, she revealed on Instagram last week.

She shared a brief video of her in light blue short shorts and and a matching shirt, with a black brace on her left ankle.

The video - set to the Curb Your Enthusiasm theme - shows her zooming in on her ankle, first teasing that she suffered the injury in a much more serious way.

'I sprained my ankle jumping out of a plane today. And by plane I mean I tripped in a CVS parking lot,' she told her followers.

Munn who shares son Malcolm, 2, with Mulaney, said she worried about the impact of her illness on her family.

'I had friends try to cheer me up by saying, 'Malcolm's not going to remember this. Don't worry',' she said.

'But I just kept thinking to myself, 'I'm going to remember this, that I missed all these things'.

'It's his childhood, but it's my motherhood, and I don't want to miss any of these parts if I don't have to.'