Strange blotches between breasts
The last couple of days I have noticed that I have developed strange blotches/spots between my breasts. Not on or under, just between, and mainly where the middle of my bra is. My breasts are not rubbing against each other or anything, so that is not the cause. They feel kind of like little lumps so they're not flat as such. This morning I noticed it seems like they have kind of started to spread downwards from my breast-area. I tried to do an internet search and one of the first responses I found was breast cancer, so of course I got worried I do not feel any lumps in my breasts or anything, but maybe a little bit of soreness when I was checking one side? though, since I was able to feel my rib in the area and not a lump, maybe it was just me poking on a nerve or something, but it felt a lot more sore than the other side.
What do you think? Is it just a skin-irritation? I have done a lot more biking than I used to recently, so maybe it's just a skin irritation from my bra rubbing against my skin in that area when I've been excersizing?
Sorry for any mistake in my spelling, since english is not my native language