The 36-year-old actress was reportedly feeling overwhelmed by the storm surrounding the Royal Wedding, a leading daily reported.
However, she was reassured by a "long chat" with Camilla, who also married into the royals as a divorcee.
According to sources, the 'Suits' star revealed that she was feeling "constrained" by Kensington Palace as she couldn't go to the shops or the gym.
While Kate and William are said to be great friends with Meghan, they are both preoccupied with two children and a third on the way.
Before the big day, Meghan will be baptised and confirmed into the Church of England before the wedding and will then begin the lengthy process of becoming a British citizen. (ANI)