For someone in their thirties, it would be unexpected, so for teenager Abi Lane, it was a shocking moment when doctors confirmed she had gone into premature menopause.
She'd never started her period, and then the classic symptoms of hot flushes and mood swings kicked in, at just 15 years old.
"When I was diagnosed, I really struggled with finding out I was infertile at such a young age," said Abi.