A woman is suing her health trust after she was forced to conceive using a donated egg because of delays in her treatment. Greta Mason went into labour to give birth to a child conceived using a donor, her husband Chris said. Mrs Mason says she will bond with her baby regardless of the fact it was conceived using another woman's eggs. But she is suing Worthing and Southlands Primary Care Trust claiming unnecessary fertility tests led to a six-year wait for treatment, meaning her own eggs were too old to use.