Justin Bieber hasn’t seemed to recover after fainting backstage following his London concert. The singer has cancelled one of two shows in Portugal.

“Due to unforeseen circumstances, Justin Bieber was forced to cancel the second performance in Portugal, March 12,” according to the venue’s official website. “The Canadian singer is eager to play for the Portuguese fans on March 11. Holders of tickets valid for March 12 should contact the respective place of purchase to receive a refund within 30 days of the date of the scheduled concert, which ends April 11.”

Although some Bieber fans will be able to see him in the city Monday night it is still unclear whether ticket holders for his Tuesday night concert there are no further confirmations on whether the show will be rescheduled.

As for what these “unforeseen circumstances” may be, Bieber had been hospitalized for breathing problems late last week. It may also be, the venue did not bring in lots of ticket sales.

As for how Bieber may be recovering? On Sunday he tweeted, “Slept good last night. hanging with the boys today. #goodtimes.”

Seems to be recovering fine to us. Keep it up Bieber.

(Photo: Jim Dyson/Getty Images)

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Justin Bieber Has Worst Week Ever! Birthday Brawl, Then Booed & Fainted At London Concerts