Kate Middleton Pregnant: Duchess of Cambridge Leaves Hospital for Extreme Morning Sickness Let's get to the news out of london. Lama hasan is outside of the hospital where kate middleton checked out, roses in her hand. Good morning, lama. Reporter: Good morning, george. Just moments ago, a very happy duke and duchess of cambridge left the hospital behind me. One of the reporters asked kate if she was feeling any better. Kate nodded and smiled and replied yes. After three days and three nights in the hospital, kate, suffering from acute morning sickness, just departed the hospital with william, waving and smiling to well-wishers. The palace told abc news, she will head to kensington palace for a period of rest. William and kate issued a statement, thanking the staff at the hospital for the care and treatment the duchess has received. Kate will be trying to recuperate at home. But this condition sometimes lasts through the first trimester. And some mothers in the most difficult cases face symptoms throughout the pregnancy. If she's been hospitalized already this early on in the pregnancy, thateans there's a greater chance she'll be hospitalized again. Often times, we see people coming back and back. Reporter: It's an eventful few I ddays since the couple went public with their pregnancy. When is a good time to visit her? When can you take me to the hospital, charles? Reporter: Despite the drama around her, kate's spirits were lifted by visits from william, pippa, her brother, james, and mother, who all took turns at her bedside as she spent a third night in the hospital. I think it was a huge comfort to have those closest to her to come and see her in hospital. Reporter: And the first public comment from the royal family. Well-wishes from prince edward and his wife, sophie. It was great about the news. But keep sympathy with katherine. The duchess may have to rely on her family for the next few weeks, as william heads back to wales for a search and rescue rotation. William and kate were due to attend a military awards ceremony this weekend. But the palace now says only william will be going.