Stretch marks

Are my stretch marks gonna lighten up or go away? I had my baby 5 weeks ago so I know it’s still early. Usually I’m all about body positivity and when I was pregnant I didn’t mind the stretch marks but now it just makes me sick. I also don’t know if I feel self conscious now because my husband left me 3 weeks ago but I’m just so depressed and hate myself. If I didn’t have my son I probably wouldn’t be alive. But then I look at my son and he looks like his daddy and then my heart just shatters all over again.