Pregnancy blues

Hey moms.... I know this may come across as a bit shallow but one of my worst fears looks like it's coming true. I've had no issues with this pregnancy. Currently 29 weeks. Not even stretch marks . Or so I thought! Now I'm starting to see slight stretch marks on my breasts, where the cleavage is! I honestly didn't want this to happen and used the right stuff to prevent it. But no I feel ugly. I feel like my body will just be ugly. My self esteem has always been low but now it will be shattered even more. I'm not overweight or anything in fact I never had weight issues, not skinny, not obese. But my fear is that I will just look horrible. Lots of people keep saying ones body looks horrible after pregnancy almost like it's supposed to be that way. I've always wanted 4 kids. And now I don't want any after my first which is this one. I feel like getting my tubes tide even.and I'm only 24. I feel like my partner won't find me attractive and that I'll be seen as ugly. I'll never gain the confidence to go to the beach or dress nicely cos I'll have to cover all the flaws. Am I the only one to feel like this? And of course, only people with money can afford to go with laser and surgery etc. Any moms that felt or feel the same?