Very red/hot boobs? TMI-PIC

Sorry for the photo - I've had slight redness under my boobs (like the left boob) with a bunch of stretch marks for the past few months since I became pregnant, and they always feel hot (I read that the hotness is common)  and never had any abnormal pain besides regular soreness that would come and go. However, yesterday night I felt like my right boob was bruised it hurt soooo so bad randomly so I lifted my shirt and noticed how red it had gotten out of nowhere.. I used an ice pac and went to bed. the pain is gone today and the discoloration has lightened but is still obviously there as shown above. Has anyone else experienced anything like this?