(CNN) – When Darla Jay rang the cancer-free bell on her last day of treatment, she exploded with joy – and proved how strong she was now.
Jay rang Harris's healthcare system in Houston, Texas.
"I could not even figure out how to do it, yesterday I was so overwhelmed," she told CNN. "I guess I did not know how strong I was!
Jay said she was diagnosed with breast cancer in February. He said he had a rapidly growing tumor and thought he would have to undergo chemotherapy. Eventually he treated himself with 30 radiation treatments and yesterday was the last.
"Even though I knew what was coming, you did not really know when you were on a radiation bed ready for treatment," she said.
Jay says the doctors saved her life. – I'm very grateful.