Hi, I was wondering if you could give me some advice. I have had a red spot like a small rash on my breast for about four months now. I have also developed a huge black bruise on the back of my upper thigh and don't remember injuring myself. It started out feeling itchy and when I looked I had lots of red spots, then the following day it had turned into an enormous bruise surrounded by lots of little ones. 

I've been to a breast clinic about the original rash and they said it's a skin issue and doesn't involve my breast tissue.

I was googling it and came across leukaemia. I'm now really scared I have it as it says you can get red rashes and also lots of unusual bruising. I know you can't diagnose but do you think this is possible?

Thanks

Sarah