Chris Jackson/Getty ImagesKate Middleton wasn't about to let some Hyperemesis Gravidarum stop her from having another baby.
The Duchess of Cambridge, who announced that she's expecting another child with Prince William earlier today, is currently being tended to at Kensington Palace for extreme morning sickness. But a source tells E! News that Kate knew there was a chance she'd suffer the same complications as those she dealt with during her pregnancy with Prince George, and opted to deal with it.
"This bout of sickness has come on very fast and Kate's gone from feeling great to feeling terribly ill very quickly," says the source. "They had thought that she might be lucky and not suffer it this time, but they knew before they decided to have another baby that it was a possibility. Kate's very practical and takes everything in her stride and decided that she'd manage to cope and just get on with it if it happened again."
The insider, who notes that they believe Middleton is 10 weeks along, continues, "Whilst it's terrible luck that Kate's so unwell with Hyperemesis Gravidarum yet again, they're hoping she'll be on the mend in no time and they are overjoyed at the news. They are so excited that George will be getting a younger brother or sister next April and Kate's just bravely fighting through this unwell stage under the guidance of palace doctors."
Additionally, "Kate and William unofficially moved to Amner Hall earlier this summer and they've been there for much of her pregnancy so far. It is their countryside home and she can relax and go for walks through the fields and woods with Lupo in the country air, which is a real tonic for her.
"As soon as she's feeling better they're going to head back to the countryside and really enjoy the pregnancy in private. The poor thing's been feeling so very sick in the last few days. It's very early stages of the pregnancy. Her mother, Carole Middleton, has been visiting them a lot, staying over for several days at a time, cooking Kate's favourite food and helping out with George as Kate has very little energy to rush around after a toddler."
The pregnant royal was eight weeks pregnant with Prince George when she was hospitalized for the same condition 21 months ago.
With Hyperemesis Gravidarum, vomiting becomes so excessive that pregnant women can become dehydrated and start to lose weight due to inadequate nutrition, Dr. Amos Grunebaum, director of obstetrics at New York Presbyterian/Weill Cornell Medical Center, told Today in December 2012. If not treated properly with intravenous fluids and anti-nausea medicine, Hyperemesis Gravidarum can be life-threatening to pregnant women and their fetuses, Dr. Grunebaum explained.