Get an inside look at how the royal family celebrated pregnant Duchess Catherine’s 36th birthday

LONDON, ENGLAND - OCTOBER 18: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Coach Core graduation ceremony for more than 150 Coach Core apprentices at The London Stadium on October 18, 2017 in London, England. (Photo by Chris Jackson/Getty Images)

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Pregnant Duchess Catherine enjoyed a quiet night at home to ring in her 36th birthday.

The Duchess reportedly celebrated her birthday on January 9 with her children and husband Prince William, according to US Weekly.

“The Duchess will be having a quiet birthday at home with her family,” a source said of the low-key festivities.

On Wednesday, the Duchess was back to work and made a visit to the Reach Academy in Feltham. Kensington Palace documented the Duchess’s day of meeting with some of the students and their parents. The school aims to “transform the lives of all of our pupils by providing them with the skills, attitudes and academic qualifications to flourish in any career and live happy and fulfilled lives,” according to their website and enrolled students range from 4-18 years old.

Following her visit, Kensington Palace shared a thank-you message to the school on Twitter.

RELATED: Duchess Kate took the most adorable photos of Princess Charlotte on her first day of nursery school

“Thank you to everyone at @reachfeltham for showing The Duchess your school today. It was wonderful to meet you all!”

While his wife visited with school children, Prince William was busy at another engagement at The Royal Marsden, a facility specializing in robotic surgery for cancer in the United Kingdom. While touring the facility, William put on a set of scrubs, complete with a scrub cap, and watched doctors perform surgery on a patient with adenoid cystic carcinoma, a cancer most commonly formed in the salivary glands of the head and neck.

After getting a hands on look, William met with patients who are receiving these innovative procedures.

“HRH chats to some of the patients on the Burdett-Coutts Ward who are receiving treatment at the @royalmarsdenNHS,” Kensington Palace shared alongside a few photos of William chatting with patients.

The couple likely slow down on their royal engagements as Duchess Catherine’s April due date approaches. After welcoming baby number three, the William and Catherine will celebrate the marriage of William’s brother, Prince Harry to American actress Meghan Markle on May 19.

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