麻豆约拍

Kim and Aaron have chosen James to be their donor. He鈥檚 exactly what they鈥檙e looking for - the physical features, the profession, and dozens of photographs of donor-conceived children on his Facebook profile page that prove he can get women pregnant.

Even better, the couple don鈥檛 even have to meet him in person to conceive - he will ship his sperm to them via the post, and they can inseminate in the comfort of their home.

But as the months pass without success, despite repeated attempts, they are becoming disheartened. They come to meet him for an in-person donation, which raises the possibility that Kim could receive his sperm through 鈥渘atural鈥� insemination, or sex - a red line for Aaron, but not for her.

Dr Keenan Omurtag, a fertility specialist, guides us through what we know - and importantly, what we don鈥檛 know - about conception.

Presenter: Aleks Krotoski