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It took 30-year-old Louise and her husband Andy six years to conceive. After such a long struggle, they're finally looking forward to meeting their longed-for baby and showing it off to their worried stepmum and health care assistant Olwen. Sammy, who's 23, is about to have her third baby. An undiagnosed condition drove a wedge between Sammy and her mum, when her bad behaviour was put down to teenage hormones, until a long-awaited diagnosis of endometriosis when she was 19 enabled them to build bridges.
Musicians Lucy and James are putting rehearsals on hold to have a baby. Laura and Mike fell in love in hospital when Laura was dangerously ill. They're expecting their second son.
Louise is having her first child at 45, but has gone through a heart-breaking split with her baby's father, Dan. Meanwhile, Jess is 16 and is finally getting a sibling.
Sarah and her mum Pat are both midwives at Liverpool Women's Hospital, and now Sarah's expecting twins. Tasha previously had a traumatic birth and is now having her second child.
Emma and James lost a combined 11 stone so they could start a family. Erika and Jez are on baby number two, after the struggle to conceive number one became an exhausting regime.
'Tattooed lady' Sazzie and 'scary biker' Adam are having their first baby. So are Jen, who has Crohn's disease, and ex-soldier John. Meanwhile, Jeannie is having her fourth and final baby.
Sarah's expecting twins. She and her mum Pat are both midwives and have to overcome their professional concerns to concentrate on the babies' safe arrival.
The hospital faces a bed block crisis and Kristina's twins need delivering fast or she'll have to move to another hospital. Amy and Dave are expecting their first child together.
When Jody, who's 29, and Chris, who's 32, arrive at Liverpool Women's Hospital, she'll be giving birth for the first time. It's a day that they thought would never come: after a struggle with infertility, they'd given up hope of having a child themselves and adopted a son. But one last try at IVF had surprising results. Meanwhile, Mormons Cameron, who's 23, and Hannah, who's 21, met through the church and married young. Their faith has taught them the importance of family, and they can't wait to become parents. They just need to get through labour first. And Lesley, who's 41, was desperate to become a mum but couldn't find a man who wanted to be a dad. Not letting that stand in her way, she turned to a sperm donor, and is now eagerly expecting her first child, who she plans to raise alone.