In the Season 6 two-part opener of Doctor Who, Amy Pond stumbles upon a picture of herself smiling and holding a baby. This was in an orphanage in 1969 America. This presumably was taken later on in her personal timeline after she had the baby, but the sequence of events revealed in A Good Man Goes To War contradicts this picture.
The picture shows a happy Amy holding her newborn baby. But we find she gave birth to Melody while captured by The Church and Silence, so she wouldn't have had this picture taken then. Afterwards, she never had a chance to hold baby Melody, so where'd that picture come from?