is this normal?!?

So I had a small pain in my chest and I looked and noticed that there was a flat lump underneath the skin that was painful and the skin is red. I don't know if that is normal or not. My parents are out of town and I can't go to the doctor right now. I'm 16 and haven't ever had problems. Please help! ALSO TMI,,, my right nipple is sore and red.

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