'I was misled by the Natural Cycles app'

Rebecca Woodhead, 26, became pregnant while using the Natural Cycles app, which claims to chart when women are fertile.

The Advertising Standards Authority has ruled that two of the company's claims are misleading.

Watch the BBC's Victoria Derbyshire programme on weekdays between 09:00 and 11:00 BST on BBC Two and the BBC News Channel in the UK and on iPlayer afterwards.