Louise is having her first child at 45, after fearing for years that she might never experience motherhood. But she's had a heart-breaking split with her baby's father, Dan, and they haven't seen each other for a few months. They both have a lot of soul-searching to do as he arrives to support her during labour. Jess is 16 and has always wanted a sibling. Her mum Elaine and stepdad Jeff found it difficult to conceive, but now Elaine is at Liverpool Women's Hospital to give birth, and her labour is an eye-opener for Jess, who says she's 'scarred for life'! Fang and Zhaoliang both grew up under China's infamous one-child policy, so neither of them has a sibling. A surprise pregnancy is a 'beautiful accident' that will give their son a welcome playmate and bring balance and harmony to their family.

Being unable to control her labour heightens 24-year-old first-time mum Natasha's anxiety. Natasha's partner Andrew is the rock that stands between her and a condition that has driven her to the brink in the past. The struggle to conceive their first baby took control of 33-year-old Erika and 44-year-old Jez's sex life, and became an exhausting regime for Jez. They're now on baby number two, and Erika has learned that, when it comes to childbirth, not everything goes to plan. Emma, who's 29, and James, who's 36, lost control of their shared passion for food when they first met, and their weight ballooned. After Emma was given the all-clear from a cervical cancer diagnosis, the couple decided to give themselves the best chance possible of starting a family by losing 11 stone between them.