The comedian, 48 - medically cleared by doctors this week - said the excruciating pain of having kidney stones was worse than childbirth. The comic, looking smart and slimmed down in a black suit and white shirt was giving his first performance since undergoing an emergency operation. Anna Hulewicz-Brown, 58, from Leicester being treated for her birthday by her son Luke Brown, 28, said: 'Michael was absolutely brilliant. He was hilarious.