Clea Shearer, "Get Organized with the Home Edit" star, revealed that she had been diagnosed with a dreaded illness ahead of her promotions for her hit Netflix series' second season.

Shearer has been enjoying success in the past months. In fact, she just released her first-ever magazine issue and acquired her company.

But amid the blessings she is getting, she has been bombarded with a shocking issue that will challenge her.

On Instagram, the professional organizer revealed that she was in New York City to record a segment for the "TODAY" show. At that time, she reportedly found two small lumps in her breast during a self-exam.

After undergoing several tests, she found out that she had stage 1 invasive mammary carcinoma.

"I felt something, a mass, a lump. But I didn't know what a lump actually even felt like, so I was just in my hotel room Googling, 'What does a breast tumor feel like?'" Shearer told PEOPLE exclusively.

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She shared to the news outlet and her Instagram post that she had just turned 40 recently. Doctors suggest that women should get their first mammogram once they reach that age.

Since February, Shearer has reportedly been trying to book an appointment amid her busy schedule. As she failed to pencil one even after finding the lump, she immediately called her OBGYN but was informed that the earliest appointment was in May.

Fortunately, her family doctor was able to test her within a few days.

Clea Shearer's Tests Came Back "Suspicious and Concerning"

After having her tests ordered within a few days, she was able to go in for a mammogram but received an ultrasound instead.

After the results came back, her doctor said that it was "suspicious and concerning." It then led to an emergency triple biopsy later that day, and the radiologist immediately suspected that it was cancer.

Despite that, Shearer and her doctor still waited for the pathology to get the official result of the biopsy. On March 11, she finally learned about the diagnosis.

"I think I had convinced myself, because of my age and because I don't have a history of breast cancer in my family, that it was something, but it would not be a cancerous tumor," she said.

Shearer will undergo a double mastectomy surgery on Friday, and she will learn after the procedure whether she needs to do chemotherapy or receive further treatment.