Sara Hannak from Belper in Derbyshire suffered the same condition as the Duchess of Cambridge during both pregnancies.
But it was particularly severe during her second pregnancy with her daughter Elsie. She says it was extremely debilitating.
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An investigation has been launched into the care of a three year-old boy at Stafford Hospital.
When you meet Malala Yousafzai it is hard to imagine such a shy, softly spoken girl addressing world leaders in the spotlight.
Nobel prize-winner and campaigner Malala Yousafzai speaks to ITV News about her political ambitions and her new Birmingham accent.