"I haven't seen her for a while but I think I she's OK", he said.
Kate was forced to pull out of two public engagements on Monday and Tuesday after suffering from hyperemesis gravidarum, as she did in her previous pregnancies.
The Duke and Duchess of Cambridge are already parents to 4-year-old Prince George and 2-year-old Princess Charlotte. Friends suggested that Kate had her second child so soon after her first - George and Charlotte are only 22 months apart - because she is keen to have more children in the future.
Pope Francis: If Trump's a 'Good Pro-Lifer' He'll Rethink DACA Decision
God commands us to welcome migrants, but governments have a duty to face the problem of migration with "prudence". However, he said, "uprooting young people from their families is not something that will bear fruit".
Kate during her pregnancy with Charlotte in 2015. "Great. Very, very happy". Bookmakers William Hill and Ladbrokes each say that the royal baby name most popular with bettors is Alice.
In London, their residence has been Apartment 1A at Kensington Palace since 2014.
If Kate had to cancel a royal engagement because of her morning sickness, we can't imagine she's getting out of the Palace too much, so she probably could use the company.
Congratulations to the Duke and Duchess of Cambridge!
Air Berlin cancels more than 70 flights due to pilots' "sick-out"
Lufthansa's low-priced division Eurowings - which is wet-leasing Airbus A320-family jets from Air Berlin - has been affected. Air Berlin announced on Monday that it would end its flights to the Caribbean from Düsseldorf beginning September 24.
'The Queen and members of both families are delighted with the news'.
Last week it is believed Kate also dropped a hint as she was spotted frequently touching her stomach while visiting The Sunken Garden at Kensington Palace which has been transformed in memory of Princess Diana.
The mother of two is unfortunately once again suffering from Hyperemesis Gravidarum - a debilitating form of serious morning sickness.
The announcement came as Prince George is expected to start his first term in school in Battersea, south-west London, on Thursday.
Roadside bombs kill 18 policemen in Egypt's Sinai
The assailants, whose identities were not yet known, later opened fire at survivors and commandeered a police pickup truck. At least 26 Egyptian soldiers were killed or wounded on July 7, 2017, in attacks on checkpoints in the Sinai Peninsula .