A Wolverhampton nurse who attributed a suspicious bruise and persistent exhaustion to her football hobby has spoken out about her cancer diagnosis, urging others not to dismiss similar warning signs.Katie Haywood, now 46, was diagnosed with myeloma in June last year after months of explaining away various symptoms."There were a lot of separate little things, but I made excuses for all my symptoms," she said.The mother-of-two, who balanced her nu…