Stretch Marks from Breastfeeding

I am finally getting the hand of breastfeeding, and baby was finally up to birth weight at 3 weeks after a lot of sleepless nights and pumping after feeding and was final feeding good... I know this is a stupid reason to be upset but I suddenly am developing stretch marks on my breasts!!

I made it through 39 +5 weeks of pregnancy with none. I was ok with the idea of having them on my belly.. it was expected but to have the top of my breast which would be visible in a low cut shirt have all these sudden purple lines has really hit me hard. If I nurse for a full year I'm guessing they won't ever go away. 😭

Can anyone share their experience with stretch marks from breastfeeding?