The 37-year-old pop star revealed that he is not 100% better after the operation, but that he is determined to keep performing for the sake of his fans.
Writing in his Closer magazine column, he said, 'For those who have been asking about my health, I'm still feeling OK, if not 100 per cent better. There's still some bleeding issues, but my doctor has assured me it's fine for me to perform, so I'm determined not to let my fans down.'
But despite his health issues, he is gearing up to give children Junior, Harvey and Princess, a Christmas to remember.
'I've bought them so many toys,' he said. 'Princess' room will be transformed into a winter wonderland, Junior is getting an amazing remote control helicopter, and Harvey will be spoiled rotten with lots of sensory toys.'