Trust me, I've been there! I'm 18 and I've had stretch marks since.. I was about 11? It started on my breasts.. then from being an athlete and gaining a lot of muscle I noticed A LOT on my butt and hips :C
Then last year I got them on the back of my knees and thighs. I was like what the heck? WHEN WILL THIS END?
Apparently, never. I have always been so self conscious and depressed because of them.. I always ware jeans and avoid the sun light, especially in the front seat of the car [idk why they're super deep looking in there] & I avoid walking by windows. The sun light defines the lines even more :/

Anyway since I have always felt ugly I've avoided having boyfriends, but by chance I finally allowed myself to have one and it turns out he looooves me and my marks.

Although his love doesn't give me confidence to ware skirts or shorts, it's a step up from how I felt before.
Give a caring boy the time of day, he may surprise you!

vicks vapour rub, rubbed in twice daily. Try it. I was literally covered in deep, deep marks after the birth of my little girl - now 5. The Doctor winced when I showed him. I tried everything, spent a fortune, got so depressed about my stretch-marks I thought I would never have the confidence to be in a relationship again.But this really does something to improve them. Yes it stinks, and it does burn a little at first - but worth it.

I know how you feel I'm 13 and have strech marks on my hips, inner thighs and upper arms, I worry about that type of thing also and I'm suffering depression because of them for I know no-one my age with them. I hate them so if anyone has any suggestiions to get rid of them because I'm sick of feeling ugly
Thanks