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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It will be another misty and cloudy start to the day.
Another rather cloudy day, with the easterly wind continuing to bring low cloud in from the North Sea.
Some mist and hill fog tonight. Brightening up on Thursday.