“If you’ve wondered why I’ve been so absent on my social channels it’s because I have never been more sick!” the actor wrote on Instagram in April. “It was the most sick first trimester of all my children.”
The 39-year-old told PEOPLE that she believes her intense morning sickness is down to her new baby’s gender.
"They say girls make you sicker and that, for me, has been the truth," she said.
And unlike weird cravings or the way you’re carrying – this idea isn’t just an old wives tale, it's backed by science
According to the New York Times, a number of studies suggest that morning sickness can indicate whether you’re carrying a girl, particularly if you’re suffering hyperemesis gravidarum. A recent study comparing 2,110 women hospitalised with morning sickness to 9,783 women who did not get severely ill, found that those who were sickest were likely to deliver a girl. Especially those who were hospitalised for three days or more. Researchers suggest that certain hormones produced by female foetuses might be to blame.