Kestutis Bauzys, 46, was detained on Thursday after Dzilva Butiene, 48, was found in Orange Grove, Wisbech on 5 April.
Post-mortem tests showed Ms Butiene, of Oakroyd Crescent, Wisbech, suffered trauma to the abdomen,
Mr Bauzys, of no fixed address, is expected to appear before Peterborough magistrates on Monday.
A man has been charged with murder following the death of a woman from suspected abdominal injuries.