discoloration on left breast

For about two months I have had discoloration and a bruise on my left breast, I have also been having nasea for over a month, it comes and goes. The bruise and discoloration is at the bottom of my breast. What can this be? I am a little concerned. Please Help. Thank you    

[Cleveland Clinic]

Dear r979:  A bruise and discoloration may be just that - a bruise and discoloration.  You may have accidently bumped yourself and forgotten.  If this worsens or if you are concerned, you should see your doctor for evaluation.