I was diagnosed with Leukemia at age 37. One month after getting a double mastectomy to get rid of breast cancer. For me it was extreme fatigue.. then I started breaking out in a rash I'd never had before - and I still have the unknown rash 7 years later, although that not a typical sign of Leukemia. That's what alerted me that something was wrong with my body. Then my lymph nodes started to swell painlessly. I should mention that my lymph nodes have become swollen often when I was growing up. Naturally, when I tried to tell my doctors something was wrong they overlooked it I had to be assertive to be heard and taken seriously.