Honey I have stretch marks ALL OVER. especially on my stomach, and I have had no children. And Im 25. LOL IT sucks, yes, but I call them my battle scars. And they remind me of what I used to be. If anyone ever makes a comment when I get to my goal weight, I'll politely ask them if they can lose X amount of weight before passing judgement. If not, keep walking. LOL
Don't let it bring you down, you can lose the weight and when you do, you'll have other things that will bother you, but at least you'll know you'll have done it.

And it's SO worth it.
Oh and for the record, we TOO can photoshop our pics to wipe off all imperfections like the models and celebrities do. But what's the fun in that :P