Stretch marks

So I'm having my second baby, I got some stretch marks with my first, on my lower stomach and on my hips. My friend was over and I showed her my belly, I said I hope I don't get more stretch marks she said I can almost guarantee they will get worse since they are like scars! I was offended! But is this true? I'm 20 weeks and about 10lb lighter than I was with my first at this stage... Such a rude ass thing to tell an emotional worried pregnant woman!!!😡