Face masks in labour: 'I feared I would vomit'
Rosie Brown was wrongly told she had to wear a mask while giving birth.
She says it made her feel nauseous and sick, and that made her panic.
Research by the charity Pregnant Then Screwed, shared exclusively with BBC News, suggests Rosie isn't alone.
Reporter: Divya Talwar
Video journalist: Brandon Brown
Additional editing: Tobias Chapple
News Editor: Kimberley Rowell