Covid-19 rules after having a potentially life-saving operation cancelled due to rising cases.Claire Monaghan was diagnosed with oestrogen positive breast cancer in January last year before undergoing gruelling courses of chemo and radiotherapy.The 47-year-old writer also had a double mastectomy after discovering she had the BRCA2 gene which increases her risk of developing the disease again.The mum-of-three was due to have her ovaries and fallopian tubes removed on January 7 but health chiefs