The singer, 34, carries the BRCA2 gene, which gives her a 40 per cent chance of getting ovarian cancer.
Brave Michelle previously underwent a double mastectomy, as the gene also increases chances of getting breast cancer.
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But the mum-of-two insists that, while it’s a heartbreaking decision, she is doing it for her children.
She told The Sun: “A hysterectomy is not just about giving up the chance for children – it’s about giving up my womanhood.
“It’s giving up everything about me, everything inside me – my breast tissue, my Fallopian tubes. Everything that’s going to go is everything that sets me apart from a man. It’s a heart breaking and life changing decision.”
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Michelle is mum to daughter Faith, 2, and son Aaron, five-months, and it’s because of them that she is having the operation: to ensure she’s around to watch them grow up.
She continued: “Every time I look at mu kids, I know why I’m doing this, so I’m around and there’s no risk of ever leaving them without a mum.”
MICHELLE HEATON SHARES ADORABLE PHOTO OF HERSELF CUDDLED UP WITH BABY SON AARON
The Liberty X star admitted that this operation is going to be a lot harder for her than the double mastectomy.
She said: “Having that op was horrible but it bore no resemblance to me as a person. This feels more like a life-changer. It’s an easier decision for what I’m preventing, but it’s a harder one for what it means in the future.”