Last night I found a lump on my breast just below the nipple or looked like a normal bug bite and had a slight itch but isnt as annoying as most bug bites I get. I'm allergic to bug bites so sometimes bites become huge. It's been 11 hours since I first noticed the lump and it's definitely bigger this morning than it was last night. When I first looked at it I had stretched the skin like I usually do for big bites to try to determine if it was a mosquito or spider and the top was white like most of my mosquito bites and I didnt see any 2 spots like spiders leave so it could be a mosquito but because of it being on my breast I got worried and read about IBC and because it grew what looks like 50% in size I got worried and wanted to ask here last night it was the size of a nickle and now maybe the size of a quarter or slightly bigger than a quarter. Side note: I have had a bug bite get to be the size of a soft ball before and this isnt that big.