Stretch marks on breasts😬

So I’m 37 weeks and I don’t have a single stretch mark on my entire body, not even my belly. I really thought I was going to get them bad on my stomach but nothing so far! But last night I was getting out of the shower and noticed that under my breasts I have tons of red stretch marks😭. I never noticed them until last night. Does anyone else have any on their breasts? Will they get lighter?