O'Donnell notes she helped an overweight woman exit her car in the village, and was soon after hit with an aching chest. Nausea and clammy skin followed, she writes on Rosie.com.
She chose to combat the problem with some Asprin, but a visit to the cardiologist the following day proved eye-opening.
"The doctor did an EKG and sent me to the hospital," she pens. "They call this type of heart attack the Widow maker. I am lucky to be here."
O'Donnell used her blog post to urge women to be aware of heart attacks.
"50-percent of women having heart attacks never call 911," she writes. "200,000 women die of heart attacks every year in the U.S."