Afghanistan: Duke and Duchess of Cambridge ‘immensely thrilled’ with pregnancy --- LONDON — The wait for the “spare to the heir” will soon be over. -- The Duke and Duchess of Cambridge announced Monday that they are expecting their second child, sending the world’s news media into a tailspin again. The news comes less than 14 months after the birth of their son, George Alexander Louis, on July 22, 2013. -- This time around as well, the duchess is being treated for acute morning sickness, a condition called hyperemesis gravidarum, which can cause severe nausea, vomiting and dehydration. -- Catherine is being treated by doctors at Kensington Palace, the royal couple’s official London residence. During her last pregnancy, she was hospitalized for a few days. -- Prince William said that they were thrilled about the pregnancy and that he hoped his wife “feels a bit better” soon. -- “It’s been a tricky few days — a week or so — but obviously we’re immensely thrilled,” he told reporters during a visit to Oxford University to open a center dedicated to the study of China. -- A Kensington Palace spokeswoman said the couple was announcing the pregnancy now because the duchess’s illness has cast doubt on her coming public engagements.