Major Pregnancy Insecurities

I'm honestly getting stressed out and depressed because I've gotten awful stretch marks and my areolas are big and dark. I'm not dating the father but we are involved although living in separate states until delivery for work reasons, but we'll be living together post-delivery. I've always felt like I'm not quite pretty enough for him anyway (we were casually hooking up for a long time and he always talked about other girls and that caused some insecurities) so I'm really worried about now that my body is even less perfect than before. I know this is vain, and that I shouldn't be worried about what he thinks. However I love him so much and feeling inadequate is horrible atop all the other hormonal issues. I know our sweet baby will be so worth every mark but it still is driving me nuts and I'm so scared of the next time he sees me.