The Liberty X star was recently diagnosed with having the BRCA2 gene, which carries an 80% chance of contracting cancer.
She explained that the "best option" for her personally would be to remove her breasts and undergo reconstruction surgery with implants.
"There is only going to be one operation, it's best option for me," she told Lorraine Kelly.
"I need to be active for my little one. I feel like it's a no-brainer, [due to] having such a high risk of breast cancer."
Explaining her decision, she said: "Everyday that goes past I'm constantly feeling my breasts, I'm worried, I'm looking for things that aren't there.
"Preventative surgery is the best option for me, it's not for everybody. I'm hoping that it can be done sooner rather than later so I can just get on with things."
Heaton also revealed that she will eventually remove her ovaries once she has another child with husband Hugh Hanley.
"I'm going to have a child in the next couple of years, then I will have my ovaries removed.
"When that will be I'm not sure, but I've made that decision."
Michelle Heaton recently stated that she does not want her baby daughter Faith to grow up without a mother.