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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Hundreds of people turned out to open a cancer support centre in memory of fundraiser Harry Moseley. It would have been his 18th birthday.
Dry overnight with clear spells and a widespread frost.
Dry and frosty tonight, sunny intervals tomorrow but cold.