Red mark on breast

Victoria

This randomly appeared Thursday night as i was changing. It’s red and mostly flat. It doesn’t appear to be a bug bite bc i don’t see bite marks. There’s no pain or itchiness. If I didn’t see it I wouldn’t have even noticed it. No pain or anything. The rest of my breast and the left one are normal without any issues. It also has not grown at all or spread. I’m naturally freaking out because you all know what appears immediately on google.