Stretch marks..??

I'm 21, hit puberty at a really early age & now have old silvery stretch marks all over my body. When i was younger i didnt think anything of them, now that i'm older i'm afraid to even be naked infront of my boyfriend. Makes me feel insecure to wear shorts or anything that exposes my legs/ stomach.

Has anybody had this issue? Anything work to rid the old ones? I've tried strivectin but so far havent seen any results.