How to explain. When I first found out in January that I was pregnant,a month later I noticed my breast are really red where the crease is. And I still have it. Sometimes it's so red I touch my breast and they are really hot. I thought It was Beginnings of stretch marks but the doctor just said it's not stretch marks but my skin is irritated. Well they are still red and really warm,so maybe it's heat rash. Any one else notice something similar?