Thomas Beatie: My struggle to get pregnant
Five years ago, Thomas Beatie, then 34, gave birth to a girl called Susan.
The American man was born female but subsequently underwent gender reassignment - keeping his female reproductive organs - after having breast surgery to remove glands and flatten his chest.
Since then Thomas has given birth to two other children, Austin and Jenson.
In his first radio interview in the UK he told BBC 5 Live's Victoria Derbyshire about his struggle to get pregnant the first time.