Pregnancy questions

constance

I have a couple of questions. What does it feel like qhenbyour baby move. I never feel her move. The doctor told me it's because shes still small and that she's behind my placenta. And inwont feeling til she gets a lil bigger. second question is, some one told me because I'm pregnant don't scratch my stomach it causes stretch marks. is that true? I already have them how do I get rid of them