American tennis great revealed she was bed-ridden for six weeks after giving birth to her first child following a string of health problems, including blood clots on her lungs. The scene went from bad to worse for Serena, who welcomed daughter Alexis Olympia in September last year. Though her emergency Cesarean section went well, things quickly went bad. "I was like, a Doppler? I needed a CT scan and a heparin drip," she told Vogue magazine yesterday.