Hello,
I have had a knot if you will under my left breast. It has been there for like 3 months or at least that was when I noticed it. It was some what bothersome, but not enough that it bugged me all the time. It was the same color as my skin, but yesterday I felt a stinging sensation and now the know is kind of squishy and red and sore to the touch also when I move forward. What could this be, is it something I should worry about or is it maybe a cyst?