Inflammatory Breast Cancer??? Please help!?

Last week I noticed a small reddish spot on top of my right breast, almost near the arm pit. There is no lump or heat, but it was sore whenever it was touched. One week later, the soreness is pretty much gone, but the spot is still there, although it looks lighter than what it used to be (more pinkish now, not... show more Last week I noticed a small reddish spot on top of my right breast, almost near the arm pit. There is no lump or heat, but it was sore whenever it was touched.

One week later, the soreness is pretty much gone, but the spot is still there, although it looks lighter than what it used to be (more pinkish now, not too noticeable). I have no idea if this is a bruise or something more serious. I've looked on several websites saying that redness was a symptom of Inflammatory Breast Cancer, and now I'm terrified I might have that! The breast doesn't look larger, there's no "pitting" or "orange like texture", no swollen glands, and the spot hasn't spread, but I'm very nervous.

Does this sound like it could be IBC? Should I see my doctor? I am 21 years old and have never been pregnant. Please help!
Update: The spot is small, maybe a little smaller than a dime or a penny.
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