She was lucky. Many others aren't, but we can fix that.
In a new blog post, tennis superstar Serena Williams opened up about how she almost died after giving birth.
"I almost died after giving birth to my daughter, Olympia," she writes. "Yet I consider myself fortunate."
Williams explains that after giving birth, she had a pulmonary embolism, or blocked arteries in her lungs. This caused her to cough, violently, tearing open the newly-stitched C-section wound. Doctors discovered blood clots in her abdomen, but were able to treat her in time to save her life. It was the type of experience you wouldn't expect of a wealthy world-class athlete like Williams, but her experience speaks to just how common these sorts of complications can be — and just how lucky she is to have survived.