Why do I have a red spot 2 years after breast reduction? (Photos)

I have a red spot that isn’t itchy but has not subsided after 3 or 4 days. it is large and hasn’t gotten smaller or bigger that I have noticed. It isn’t tender to the touch either and isn’t even noticeable in anyway concerning pain. I have gotten a red spot before on the other breast but it was really itchy and would go away after a day. I am kind of freaking out. Is this normal and should I be worried? please help. The only thing new in my life is that I got a new job.