Kate Middleton
Duchess of Cambridge Kate Middleton arrives to meet children and mentors from Chance U.K.'s Early Intervention Programme at Islington Town Hall on Oct. 27, 2015 in London, England. Getty Images/Chris Jackson

Kate Middleton, who gave birth to Princess Charlotte in May, is pregnant with twins, Ok! magazine reported in its latest issue, quoting a palace source. While the royal family members are excited over the news, the Duchess of Cambridge was “little discouraged” with third pregnancy, the source told the magazine.

Middleton is already three months into the pregnancy, the source said. The cover of the magazine carried a photo of a sonogram, which it claimed was released by the palace.

“To say she [Middleton] was shocked would be an understatement,” the royal insider told the magazine, according to Hollywood Life. “She’s suffering more from exhaustion than anything else.”

“She [Middleton] hasn’t had much of an appetite, so she’s hardly gained any weight. Kate is very good at putting on a brace face, but everyone just wants to make sure she’s taking care of herself,” the source added.

Middleton did not seem to be happy about the pregnancy, and was overcome with the thought of four babies.

“Kate was a little discouraged. She wasn’t sure if she would cope. She’s still in the fog of having a newborn, and the thought of months and months of more sleepless nights with two babies caused her to panic,” the magazine reported, citing the source. But, the 33-year-old’s family was “excited at the prospect of twins.”

However, the report has not been confirmed by the palace officials. Middleton’s representative dismissed the report to Gossip Cop.

“The Palace has not released a statement” about Middleton’s pregnancy or any sonogram, the representative told the gossip debunking website.