Ms Ross said she "couldn't sleep" and had to go to A&E.
She said it had taken five months and four doctors before she was diagnosed with stage two breast cancer.
Ms Ross said she underwent six rounds of chemotherapy, a double mastectomy and radiotherapy.
Although she is now cancer-free, she said she felt "betrayed" by some of the medical professionals she dealt with.
"I feel angry, that's the main reason why I want to get my story out there," she said.
"You know your body, so push your doctors if you feel there's something wrong.
"If they don't listen, look for someone else because that's what I had to do. I wish I had done it sooner."