‘She will be on medication, anti-sickness tablets, so it's important she takes them on time.’
'The emotional side is going to be really tough on her. It's just so unrelenting, you wake up thinking you've got a whole day to get through and this lasts for months'
Caitlin Dean, Pregnancy Sickness Support spokesman
Mrs Dean said William's support would also be important: ‘The emotional side is going to be really tough on her. It's just so unrelenting, you wake up thinking you've got a whole day to get through and this lasts for months.
‘William is going to be really key. My husband was my rock and, as hard as it was, it brought us closer together.’
The Duke is an RAF search and rescue helicopter pilot based at RAF Valley on Anglesey and is likely to get time off to help care for his wife but will have to return to work at some stage.
The Duchess's mother Carole and sister Pippa could step in to provide support for Kate when her husband is away.
TAKE IT EASY AND DRINK PLENTY OF FLUIDS: EXPERTS' ADVICE TO KATE
The Duchess of Cambridge will need to take it easy over the coming days after being released from hospital.
Health experts said Kate, who spent three days at London’s King Edward VII Hospital after being admitted with severe morning sickness, will now need to make sure she drinks plenty of fluids.
Take it easy: Health experts say Kate will need to drink plenty of fluids over the coming days
Hyperemesis gravidarum is a rare condition which causes severe vomiting during pregnancy while other symptoms include severe nausea, low blood pressure and fast heart rate, headaches, lethargy or confusion.
Women who are admitted to hospital with it are usually treated by being given fluids intravenously and by anti-sickness tablets. Doctors will monitor them and let them go home once they can keep fluids down.
Consultant obstetrician Daghni Rajasingam, spokesman for the Royal College of Obstetricians and Gynaecologists, said that once out of hospital, it is important sufferers maintain their intake of fluids and eat small amounts as they will no longer be on a drip.
She said: ‘Essentially, women who have hyperemesis gravidarum would just be resting and maintaining hydration, and maintaining their food intake as much as they can and controlling the nausea and vomiting symptoms.
‘They should eat anything they find palatable, what they can keep down, it’s a matter of working out the things that make the nausea worse. It’s different for different women.
‘Fluid intake is really key, water being the best liquid.’
The condition can cause extreme weight loss but Ms Rajasingam said women will put the weight back on once they are eating and drinking again.
She added: ‘It’s directly related, really, to how much vomiting they have had and if they are managing to keep food down and absorbing calories from what they eat.’
Asked about the amount of rest the Duchess is likely to need, Ms Rajasingam said: ‘The sort of advice a woman would be given would be to take it easy over the next few days and be reasonable about the amount of activities depending on how active they were before.
‘The advice would be to be sensible and to do things in moderation, but certainly a period of rest and recuperation is good.’
She said most women find severe morning sickness ends around three months into the pregnancy.
But she added: ‘For a small group of women it may continue, and for an even smaller group of women it go on until the baby is born. For them, further periods in hospital may be necessary.’
Other ways of stopping symptoms include eating ginger and using pressure bracelets, she said, adding: ‘There are thousands of old wives’ tales but they are the most common.’
Hyperemesis gravidarum affects 3.5 per 1,000 pregnant women and can cause women to vomit blood.
It is thought to be caused by elevated levels of the ‘pregnancy hormone’ hCG. The body begins to produce human chorionic gonadotrophin (hCG) after conception.
'The sort of advice a woman would be given would be to take it easy over the next few days and be reasonable about the amount of activities depending on how active they were before'
Daghni Rajasingam, Royal College of Obstetricians and Gynaecologists
Gail Johnson, midwife and teacher at the Royal College of Midwives, said Kate must make sure she does not overdo it.
‘Women who have had quite severe sickness will obviously feel very tired so it's very important that they continue to rest and appreciate that they will continue to feel tired,’ she said.
‘They may feel better but, just because they've stopped vomiting, it doesn't mean that they're all fine and dandy.
‘They do not necessarily need bed rest, but if they feel tired they should go and have a lie down.’ She said sufferers must ‘listen to their bodies’ and eat little and often.
‘It is important to keep the blood sugars stable. Foods that are slower to digest like wholemeal foods and ones that are nutritious are the best.
‘As the pregnancy progresses women become more astute about how to avoid things that may trigger vomiting and learn to control it more.’
'HOW DO YOU KNOW I'M NOT A RADIO STATION?': CHARLES SHARES A JOKE
Prince Charles today showed off a cheeky sense as he spoke of his joy at the Duke and Duchess of Cambridge expecting their first child.
Explorer and royal: Sir Ranulph Fiennes and Prince Charles laugh on board the SA Agulhas in London
Charles, who was boarding HMS Belfast in London, beamed as he said: ‘I'm thrilled, marvellous. It's a very nice thought to become a grandfather in my old age, if I can say so.
'I'm very glad my daughter-in-law is getting better, thank goodness.’
Charles was aboard the ship to cross over to the SA Agulhas, where he met Sir Ranulph Fiennes to wish him well on his latest Antarctic exhibition.
Earlier Charles had joked with reporters quizzing him on daughter-in-law Kate's release from hospital. 'How do you know I'm not a radio station?' he said, in relation to the prank call to King Edward VII Hospital by two Australian DJs.
This afternoon the Prince of Wales gave operational service medals to soldiers who fought in Afghanistan.
The troops from the 1st Battalion Welsh Guards were presented with the military honours by Charles, the regiment's Colonel.
Lieutenant Colonel Dino Bossi, commanding officer of the 1st Battalion, said: 'We had a marvellous day today. It was an honour and a privilege to host our Colonel and for us to reaffirm our connection with him.
'That's never more evident than in the care and attention he takes spending time with our bereaved families and the injured (soldiers') families.
'They're left in no doubt he personally and the nation in general recognise the sacrifices they have made.'
'I'm thrilled, marvellous. It's a very nice thought to become a grandfather in my old age, if I can say so'
Prince Charles
During his visit to the unit's base, Cavalry Barracks in Hounslow, west London, Charles presented the medals to the guardsmen on the parade ground after taking a royal salute.
The 1st Battalion served in Afghanistan from March to October and lost a number of men during their deployment.
During a private reception, the Prince met the families of soldiers who had been killed while on operations and presented them with Elizabeth Crosses.
Toni Jones
Delighted: The Prince of Wales was pictured today in Hounslow, west London, presenting medals to members of the 1st Battalion Welsh Guards
Prince Charles today said he was 'thrilled' at Kate's pregnancy, after the beaming Duchess of Cambridge left hospital following four days of treatment for acute morning sickness.
The Prince of Wales expressed his delight at the'marvellous' news and added: 'It's a very nice thought to become a grandfather in my old age.I'm very glad my daughter-in-law is getting better, thank goodness.'
The Prince also alluded to a prank call to the hospital by two Australian DJs on Tuesday morning that duped a nurse into revealing details about Kate's health, joking to reporters: 'How do you know I'm not a radio station?'
Kate was discharged from the King Edward VII Hospital in central London - where she smiled and told reporters she was 'feeling much better' -and headed to Kensington Palace to rest.
The 30-year-old emerged from the private hospital looking relaxed, carrying a bouquet of yellow flowers and giving a brief smile to the waiting press before being driven away with her husband Prince William.
Kate, who is less than 12 weeks pregnant, was wrapped up against the cold in a coat and scarf, and the royal couple will now spend time at their London home to allow for her to recuperate.
She was admitted on Monday after developing the condition of hyperemesis gravidarum, and was suffering from the effects of dehydration.
For medical staff to allow Kate to go home, her severe vomiting must be under control and they are likely to have given her anti-sickness medication.
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Royal couple: Kate, 30, emerged from the private hospital looking relaxed, carrying a bouquet of yellow flowers and giving a brief smile to the waiting press before being driven away with her husband Prince William
Smiling: Kate, 30, left the hospital with her husband Prince William as the furore over the hoax call that duped a nurse into revealing details about the Duchess's health continues
Looking out: Prince William and Kate are expecting their first child, and the Duchess of Cambridge was admitted to hospital suffering from a severe form of morning sickness in the early stages of her pregnancy
Looking well: Kate, who is less than 12 weeks pregnant, was wrapped up against the cold in a coat and scarf, and the royal couple will now spend time at their London home to allow for the Duchess to recuperate
