After the show she tweeted: 'I'm so light-headed!'.
A source apparently told the newspaper: 'She's just a young woman who just wants to have fun, but she was feeling pretty low.
It's a mix of exhaustion and stress. She's been partying hard to take her mind off things, but there are days when she wakes up and doesn't even know where she is because of the travelling.
'It's no wonder she is feeling down.'
The singer has 16 more dates to fulfil as part of her Loud tour, seven of which are in the UK.
Riri,you didnt think being a superstar was just about partying round the world did you?Well now we know why Beyonce is called"The Queen Bee"