I'm a first time mom, I weigh 120 5'1 and I never once in my life had gotten stretch marks. I knew being pregnant i was going to start getting them but not so soon and so badly. I'm currently 14 weeks pregnant and i have purple stretch marks everywhere. my thighs inside and out, my butt, my calves, my boob sides, everywhere. i'm not gaining weight yet but my stretchmarks are so purple and long.. when did you guys start getting them? what did you use for stretch marks?