Natalie European Buddhist Aug 18, 12:48 PM ET

Los Angeles (E! Online) - Christina Applegate has enthusiastic news.

"They got everything out, so I'm definitely not feat to expire from boob cancer," the Samantha Who? grapheme says in an discourse lawful to expose weekday on Good Morning America.

The 36-year-old actress, whose mom also battled—and survived—the disease, revealed primeval this period that she had been diagnosed with primeval initiate boob cancer and was undergoing treatment.

Applegate, said that she has been effort lawful mammograms since she overturned 30. A ordinal MRI, conception of the follow-up from a biopsy she had terminal year, revealed the cancer.

"I was so angry and I—I meet advert I was—I was meet shaking," she told GMA cohost Robin Roberts, herself a breast-cancer survivor, on Monday. "And then also immediately, I had to go into…'take-care-of-business mode,' which was…I asked them, 'What do I do now? What—what is it that I do? I intend a doctor, I intend a surgeon, I intend an oncologist? What do I do?'"

Apparently she did what was correct for her, which included penciling in every the support she necessary and change to a macrobiotic diet

"I'm clear," Applegate said. "Absolutely 100 proportionality country and clean. It did not spread. They got everything out, so I'm definitely not feat to expire from boob cancer."

The bill woman for clogging care, who institute discover in July that she had been appointed for her prototypal lead-actress Emmy, is slated to materialize alongside Charlize Theron, Meryl actress and Jennifer Aniston on the one-hour primary Stand Up to Cancer, which affectedness Sept. 5 on NBC, ABC and CBS.