Sudden breast changes

I occasionally get itchy breasts as I'm prone to eczema but 2 days ago I noticed some sudden changes. I have a warm red patch about 3" in diameter on the cleavage side of my right breast that itches like crazy.  I can't pinch a thin bit of skin as usual and when I push the skin together there is a definite orange peel appearance.  Obviously I know about Inflammatory breast cancer and my symptoms are on the list but can it really come on this quickly? I intend to get it checked out ASAP but as I'm mum to two young boys I guess I just wanted to tell somebody that I'm worried.