I have stretch marks help! I will hopefully pick the best answer!?

I'm 12 with stretch marks on my breast, hips, inner thighs, butt, and the back of my legs! I weight 130-132 pounds and is 150- 154 cms ( about ) Do I need to lose weight and how?? i've tried palmer's cocoa butter oil, mederma and that's it!!! I dont want any surgeries!!! I will hopefully pick the best answers if u answer all these questions u will have a chance of being picked for best answer!! k thx :D