Six weeks after reports first surfaced of her pregnancy, Kate Middleton's younger sister opened up about her first trimester in her latest column for the U.K. supermarket monthly Waitrose Kitchen magazine.
"I was lucky to pass the 12-week scan without suffering from morning sickness. That meant I was able to carry on as normal," Pippa wrote, as reported by Hello! magazine.
In September 2017, Kensington Palace announced that Kate was pregnant with her third child—and noted that she was once again battling HG, similar to when she was carrying Prince George, who turns 5 on July 22, and Princess Charlotte, now 3.
Though Kate was unable to carry out her royal duties during the first months of her pregnancies, sister Pippa was able to continue her everyday schedule, though she admitted she had to make some slight changes.
"When I learned the happy news that I was pregnant, I realized I needed to adjust my four to five-day-a-week [fitness] routine," she wrote, noting that she kept her pregnancy a secret from her gym instructor until the "riskier months" were over.
Pippa also shared how fitness has been an integral part of her pregnancy.
"I've noticed my body change, but through exercise I feel it's being strengthened," she wrote. "I'm fanatical about sport and have looked at loads of books and websites on exercise during pregnancy, but have been disappointed by the limited technical information what you can and can't do."
"This being my first pregnancy, I had so many questions I felt were still unanswered," she wrote. "I wanted to know things like, would I strain if I served in tennis, are strokes of swimming safe, can I still do a normal yoga class if I avoided certain positions? Could I still work my abs?"
She added, "I've noticed my body change and weight increase, but through effective exercise and sports I feel that it's been strengthened to support a healthy pregnancy, birth and recovery...And ensure that post-baby, my old favorite jeans will still fit eventually!"
Pippa recently stepped out in London on June 2, and she and Matthews, 41, were also in attendance at the May 19 wedding of Meghan Markle and Prince Harry. Just one day after the royal wedding, the parents-to-be celebrated their one-year wedding anniversary.