Redness on entire breast

Hello~ hope everyone is doing well. I’m at 28 weeks now and I’ve started to have reddness on my entire breast and chest. It’s only on the top from the middle pard if the collarbone down to the middle of my breast. My nipples and underboob doesn’t have them. Should I be concerned? I googled and can’t find images that are same with what’s going on with me. Anyone can advice? I’m worried and concern it might be breast cancer and I’m spiraling. . #advicepls #firsttimemom