Amanda Seyfried revealed she was dealing with “a tough case of COVID-19” when she received news about her Academy Award nomination for her supporting role in the film, “Mank.”

Seyfried appeared as a guest on Tuesday’s “Late Night With Seth Meyers” and told the host that though having COVID-19 was a “stressful” time, she did not allow the virus to dampen her spirits especially after receiving the good news which she considers “career-changing.”

After host Meyers congratulated Seyfried for her Oscar nomination, the 35-year-old actress explained how she reacted to the news, saying, “I got a call from my publicist… I turned my phone off the night before because I was like, ‘If anyone’s going to tell me I got an Academy Award nomination or didn’t, I want it to be my mother. She lives with us.”

Seyfried continued, “But I was also sleeping in because I had a tough case of Covid.”

The “Mamma Mia” actress also recalled having to do interviews about the nomination while being “so ill” and “dealing with one of the worst moments of my life.”

But she said she chose not to reveal her illness and mustered enough strength to do the interviews because “I didn’t want that to take over because clickbait and stuff like that.”

She was also worried that her mother would get the virus although both of them have been vaccinated. Seyfried said she contracted the virus two weeks after she got vaccinated.

“It’s great to have both, apparently. Hybrid immunity,” the mother of two joked.

Seyfried described the experience as “really stressful” with the Oscar nomination as “an amazing career-changing thing.”

“And boy, life is weird. Makes you really embrace the positive,” she added.

During her appearance on the show, Seyfried also talked about her new movie, “A Mouthful Of Air,” in which she plays a mother who is suffering from postpartum depression.

“It’s just so traumatic to deliver a baby even if you’re not suffering from anxiety or depression or any kind of mental illness to begin with,” she told the audience.

“We don’t talk about it a lot and I hope this movie generates that conversation,” she said at the end of the interview.

“A Mouthful Of Air” is based on a 2003 book by writer Amy Koppelman, who has also directed the film. The movie, which is being distributed by Sony Pictures, hits theaters Friday. 

Watch the full interview below: 

US actress Amanda Seyfried -- a Globe nominee for her work in Netflix film "Mank" -- says she will be at home for the gala US actress Amanda Seyfried -- a Globe nominee for her work in Netflix film "Mank" -- says she will be at home for the gala Photo: AFP / JEAN-BAPTISTE LACROIX