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.