From WENN.com

The former First Lady was admitted to New York Presbyterian Hospital on Sunday (30Jan12) after doctors found the clot during a medical test. She is expected to make a full recovery and plans to return to work next week (beg07Jan13).

Spokesman Philippe Reines says, ""The Secretary continues to recuperate at home. She had long planned to take this holiday week off, so she had no work schedule. She looks forward to getting back to the office next week and resuming her schedule.""

Clinton had a rough end to 2012 - she fell ill with stomach flu and then suffered a concussion after passing out due to dehydration.