I'm freaked out.

so maybe two weeks ago my boyfriend noticed a red bump on my boob. we brushed it off as a bug bite and i didn't really think of it again. a couple days ago i noticed that the bump had gotten bigger and a little hard. also the skin around it is peeling off. i thought maybe it could be an ingrown hair but i looked it up and it's very uncommon to get them on your breast. im scared as to what it could be. please help and tell me if any of you have had something similar happen to you. thank you:)