I have had a lump behind my left ear and a slight headache for the past few days. Before the lump appeared I had a rash, for several days, on my chest, that would come and go and then spread to my arms and stomach. Probably unrelated but worth mentioning. Female, 5 6 140 pounds. No medication, breast cancer and stomach cancer run in the family. Only time in the hospital was 6 months ago for the birth of my son. No diet or enviornmental changes either. My brother and cousins just experienced similar things and both were positive for cancer.