Despite a seemingly easy nine months of pregnancy (Williams was so careful she would ask 34-year-old Ohanian if she could eat a marshmallow), Williams reveals her daughter was born by emergency C-section after the baby's heart rate dropped dangerously low.
Williams has a history of blood clots, and had been taken off her daily anticoagulant after the C-section.
Having experienced the symptoms before, she assumed she was having a pulmonary embolism and demanded the medical team give her a scan and a blood thinner medication. She recalls telling medics: 'A Doppler?
Doctors found several blood clots had settled in her lungs.
Serena also appears in another picture with her child, her mother Oracene Price and sisters, Isha Price, Venus Williams and Lyndrea Price.
But the drama didn't end there and Serena's C-section wound opened, leading to more surgery, whereby surgeons found a large haematoma had flooded her abdomen. She also needed a filter inserted in a vein to prevent further clots and was forced to rest in bed for six weeks. "The nurse thought her pain medicine might be making her confused".
"I was happy to change diapers", Ohanian, who married Williams in November, told Vogue, adding that the hardest part was "not being able to help".
"No one talks about the low moments-the pressure you feel, the incredible letdown every time you hear the baby cry", Williams said. She had targeted the Australian Open, which she won past year while only a few weeks pregnant, but that did not pan out after an exhibition match loss to Jelena Ostapenko last week.
Today, Williams is raising her daughter and has made a return to the tennis court.
She went on to reveal, "I've broken down I don't know how many times". I don't play to be the second best or the third best.
"There hasn't been a clear number one since I was there". "Knowing I've got this attractive baby to go home to makes me feel like I don't have to play another match".
But that's not to be confused with the idea that Serena is anxious about reclaiming her spot as number one when she returns. I want them, but I don't need them.
"I hate playing her because she gets this look on her face where she just looks sad if she's losing - solemn", Serena said.