Photo: Andrew Lipovsky/NBC

The Tonight Show Starring Jimmy Fallon - Season 5

Carrie Underwoodis opening up about a recent illness thatforced her to cancel two showsin the U.K.

But this was an extreme situation.

“Basically I got a viral thing,” the pregnantAmerican Idolalum remarked, adding that after she woke up, “I had vertigo and I could not stand up.”

“It was crazy,” she continued. “I ended up in a German hospital for three days.”

Underwood went on to share that while the staff “were so sweet and so nice,” the language barrier made communication difficult.

“I didn’t learn anything,” the singer, who is mostly vegan, confessed. “I learned one phrase… ‘No meat please.'”

Earlier this month, Underwoodcanceled two planned appearances in the U.K. “due to illness.”

“Carrie Underwoodhas been forced to cancel several upcoming promotional activities in the UK,” her record label posted on Facebook. “She looks forward to resuming promotion for her new album,Cry Pretty, soon.”

Andrew Lipovsky/NBC

The Tonight Show Starring Jimmy Fallon - Season 5

During the interview, Underwood also revealed that her3½-year-old son Isaiah Michaelhas an interesting idea for his little sibling’s name.

RELATED VIDEO: Why We’re Obsessed withCarrie Underwood

“He said ‘Isaiah Michael Fisher,’ which is, of course, his name, which, of course, would be confusing,” she remarked, adding, “He wants to name everything his name cause he thinks that’s special.”

Andrew Lipovsky/NBC/Getty

The Tonight Show Starring Jimmy Fallon - Season 5

Underwood and her husbandMike Fisherannounced that they were announcing their second child together in August.

“You might be wondering or asking, ‘Carrie, why is your tour starting in May?’ Well… yay!” Underwood said during a videoannouncing her pregnancy.

source: people.com