Red spots on breast?

So last night, I fell asleep with my breast out because I was tired and feeding my daughter and woke up to my right breast really itching in the middle of the night, I was half awake scratching then in the morning I had these red spots all over I looked and it doesn't hurt or anything, just google said it could be a form of cancer :/ and idk if that's true this is the first time this has happened