I've looked at the link. It seems episode 2 features someone who is 21 and has 5 children. When I was that age children hadn't even crossed my mind let alone five of them. Assuming there are no multiple births she's spent about 4 1/2 years pregnant.
It makes me realise how much I took for granted at that age - travelling, being at university, hardly having any responsiblity except for myself, staying out late with friends if I wanted to, going where I liked more or less when I liked. I don't think I'd have liked to be tied down with 5 kids and not much money at 21. To be honest I find 2 a struggle sometimes in my mid 30s with a reasonable income.
Sorry not sure where all that came from